In this blog post, we’ll explore the concept and characteristics of social media, the principles behind the rapid spread of information, and the features and evolution of Twitter and Facebook—two of the most prominent social media platforms—to understand how social media delivers information compared to traditional news and how it has transformed the way people communicate.
Recently, more and more people have been using social media as their primary means of communication. The amount of time people spend on social media has also increased significantly compared to the past, and social media covers a wide range of information—from trivial daily life to news and social issues. In particular, with the widespread adoption of smartphones and mobile internet, anyone can now create and share information anytime, anywhere. In the past, professional media outlets such as news broadcasts and newspapers led the production and dissemination of information, but now even ordinary users can create information directly from the scene and share it with a vast audience. This shift has fundamentally transformed the very way information is produced and distributed. Social media has evolved beyond simply being a space for staying in touch with friends; it has become a means of rapidly sharing news, events, social opinions, and personal experiences.
Social Network Services (SNS) refer to services that enable users to form relationships and exchange information with one another via the internet. While they share similarities with traditional online communities in that they are web-based services designed to strengthen existing social connections or create new ones, they differ in that content is linked primarily around individual relationships. On SNS, information is connected around people, and the information a user encounters varies depending on whom they are connected to and what interests they have. SNS combines various features, such as the ability to categorize people into specific groups, the ability to communicate with friends and acquaintances, and the ability to recommend content based on users’ interests and relationships.
Since relationships are formed and communication takes place via the internet rather than through face-to-face meetings or written correspondence, SNS can be seen as an online extension of traditional gatherings and human relationships. As long as you have a device capable of connecting to the internet—such as a computer or smartphone—you can use social media regardless of location and create and share various forms of content, including text, photos, videos, and surveys. Furthermore, it offers the advantage of allowing users to form connections with countless people regardless of geographic location. On the other hand, a drawback is that the sense of intimacy may be lower than when meeting in person, since communication takes place through a screen rather than face-to-face. Although social media appears to connect people, there have been persistent claims that it actually disconnects them. Since these interactions take place in cyberspace, relationships can easily become impersonal, and users often find themselves in extreme confrontations over controversial topics. In this sense, social media is both a powerful tool for connecting people and a potential source of conflict and division.
The basic activity on social media is posting content. Posts—which can be text, photos, or videos—are generally referred to as “posts” or “content.” There are no specific restrictions on the content of these posts. Users can share almost anything they experience in daily life, such as updates on their lives, food, travel, hobbies, personal thoughts, or interests. Not only individuals but also companies, politicians, public institutions, and media outlets use social media to convey information. While in the past the focus was primarily on sharing personal daily life, today social media is widely used by companies and organizations as a means to disseminate announcements, news, and promotional content, as well as to communicate directly with users.
The core of social media is relationships. Users do not see everyone’s posts equally; instead, they are exposed to information centered on content from people they are connected to or accounts they have shown interest in. Since countless posts are uploaded to social media every day, it is virtually impossible for a single person to view them all. Furthermore, users do not take an interest in every single post. In this context, relationships between people, users’ interests, and reactions to content all influence how information is prioritized. Since the platform primarily displays content related to people or topics the user is interested in, users can relatively easily find the information they need amid the vast amount of data. One of the reasons social media has gained such popularity is precisely because it allows users to filter out some of the overwhelming amount of information through these relationships and recommendation systems.
This method of filtering information through relationships can be understood more clearly when compared to a typical online bulletin board. On a bulletin board, posts uploaded to the same space are visible to many users, causing them to accumulate rapidly. As the number of users and posts increases, it becomes difficult to find the desired information. To address this, bulletin boards are typically divided into sections by specific topics; however, it is difficult to completely solve the problem of an overwhelming volume of posts when numerous users are active in a single space. In contrast, on social media, content is displayed differently based on the user’s relationships and interests. Rather than unconditionally showing posts from everyone with whom the user has no connection, the platform focuses on content the user is likely to be interested in, thereby allowing for some control over the volume of information. Furthermore, users can access information on various topics through posts from people or accounts they follow, without necessarily having to create separate topic-based forums. This approach is a defining characteristic of how social media organizes and delivers information differently from traditional message boards.
When first starting out on social media, it’s common to connect with people who are your friends or acquaintances in real life. This is because social media connections often mirror real-world relationships. By syncing your contact list or other account information, you can easily find people you already know and connect with them. This feature is particularly convenient for people using social media on a smartphone for the first time. Meanwhile, social media also recommends people or accounts that users might be interested in. Users can receive recommendations not only for people they knew in the past but never connected with, but also for new people or accounts with similar interests. Through these recommendation features, users sometimes form online connections with people they didn’t know well in real life. They can also follow celebrities, companies, media outlets, and public institutions to receive the information they post.
On most social media platforms, users can provide feedback on others’ posts. Typical features include comments, “likes,” sharing, and quoting. Through this feedback, users can respond to each other’s thoughts and continue the conversation. Social media communication differs from traditional one-way information dissemination in that it doesn’t end with simply conveying information; users can immediately see others’ reactions. How easily and conveniently users can give and receive feedback is a key factor influencing how social media is used and its popularity. Social media enables more interactive communication than traditional media or simple bulletin boards, and a single conversation can form as posts, comments, replies, and shares build upon one another in a continuous chain.
Most social media platforms support posting from mobile devices, typically through apps designed for smartphones and tablets. This allows users to share their daily lives regardless of location. For example, if you see a beautiful sunset at the beach, you can take a photo with your smartphone and upload it immediately. This is much simpler than transferring photos to a computer and uploading them from there. The widespread adoption of mobile devices has played a key role in the proliferation of social media, enabling users not only to consume information but also to produce and share it directly from wherever they are. In addition to the official apps for each social media platform, users can link their social media accounts or share content through various other apps and services. For example, users can share their activities or content they’re interested in from gaming or shopping apps on social media. In this way, social media has moved beyond being a standalone service; by connecting with various mobile services, it has become an integral part of everyday information sharing.
As the production and sharing of information via mobile devices has become commonplace, the speed at which information spreads on social media has also increased significantly. In the past, when an incident occurred, news organizations had to cover the story, write an article, and then deliver it to readers. However, on social media, a witness to an incident can take photos or videos on the spot, write a post, and publish it immediately. When other users repost this content, the information can reach people who have no direct connection to the original poster. Consequently, social media sometimes conveys on-the-ground situations faster than traditional news outlets. However, rapid information dissemination does not necessarily equate to accurate information. Since there is a possibility that false information will spread alongside verified facts before fact-checking is completed, the speed and reliability of information transmitted via social media must be considered as separate issues.
In the past, Twitter was one of the leading social media platforms. Launched in March 2006 by Jack Dorsey and others, Twitter grew into a service for quickly exchanging short messages. As its user base expanded globally, it established itself as a premier platform for sharing news, politics, and social issues in real time. In South Korea as well, Twitter gained rapid popularity alongside the widespread adoption of smartphones and was used as a space where politicians, journalists, writers, and ordinary users shared a variety of information. However, the Twitter brand was rebranded as “X” in 2023, and the service is currently operating under the name X.
One of the key reasons Twitter first gained attention was the ability to quickly post short messages. While Twitter’s original character limit was 140 characters, standard posts on X now allow up to 280 characters. Additionally, X Premium users can post long-form content of up to 25,000 characters. Standard posts can include not only text but also photos, GIFs, videos, and links; unlike in the past, the service no longer requires photos or videos to be linked via external sources. Therefore, while the short-form structure that characterized Twitter in the past remains an important feature of X today, its functionality has expanded significantly compared to earlier times.
On X, users can quickly share their thoughts, news, and social issues. Posts addressing political topics or social controversies are common, and the platform is also used to share on-the-ground situations when disasters or accidents occur. There are also instances where people attending court proceedings, events, meetings, or conferences relay what is happening on-site in real time. When this information is reposted by other users, it can spread very widely in a short amount of time. Since posts on X can include not only text but also photos, GIFs, and videos, users can convey the on-site situation through a combination of text, images, and video.
X offers features such as following, reposting, quoting, mentioning, and hashtags. First, “following” is the basic way to connect with other accounts on X. When you follow a public account, you can view the posts that account uploads on your timeline. As the number of accounts you follow increases, so does the amount of information you are exposed to. While you can generally follow public accounts without prior approval, you must have a follow request approved by the account owner to view posts from private accounts. Therefore, following goes beyond simply adding people; it is also a means of determining what kind of information you will consistently be exposed to.
People who follow you are called “followers.” In the past, the number of followers was considered a key indicator of a user’s influence. This was because celebrities, politicians, and authors could widely disseminate their messages by amassing large numbers of followers. However, it is now difficult to judge the influence of a post based solely on the number of followers. This is because posts can be reposted or quoted, and content can be exposed to people who do not directly follow the account through recommendation systems or search results. Therefore, when assessing the reach of information on social media, it is necessary to consider not only the number of followers but also factors such as the extent to which a post spreads, user reactions, and recommendations and shares.
When you sign up for X, you can receive recommendations for other accounts or topics of interest. These recommendations may include people you are likely to know or accounts similar to those you currently follow. This recommendation feature helps form new connections among a vast number of users. Whereas in the past users had to search for others manually to follow them, it is now much easier to discover accounts they didn’t know about or content related to their interests through the recommendation system.
Next are the feedback features: reposting and quoting. Reposting is a feature that allows users to share another person’s post with their own followers. When a user reposts a post, it can be seen by the users who follow that person. This allows a single post to spread to a very wide audience. It creates a chain reaction where one person shares information, and another who sees it shares it again, causing the information to spread in a chain-like manner. This method of dissemination is one of the key reasons why social media can spread information faster than traditional media. However, because of this same structure, unverified information or false claims can also spread rapidly.
There was an instance in the past when torrential rain hit Seoul, and citizens directly shared information about flooded areas and traffic conditions, causing on-the-ground updates to spread faster than traditional news reports. Posts and photos uploaded on the spot by people passing through specific areas, such as Gangnam Station, were transmitted to other users and repeatedly shared, eventually reaching a wide audience. This serves as an example of social media’s power to disseminate information. At the time, this method of information dissemination received particular attention, and there was even an assessment that information produced directly by citizens could complement traditional media coverage. However, today, just as information spreads rapidly through social media, misinformation can also spread alongside it; therefore, one should not automatically assume that on-the-ground information is necessarily accurate.
There is also the “mention” feature. By including “@username” in a post, you can mention a specific user. This is primarily used when addressing another user or trying to draw the attention of a specific account. Conversations can also continue when replying to a post by mentioning the other person’s account. Users who are mentioned receive a notification informing them they’ve been tagged, and the post may become part of an ongoing conversation. On X, mentions are one of the basic ways to include specific users in a conversation.
In the past, the term “RT” was also widely used on Twitter. RT was used to quote another user’s post while adding one’s own opinion, and it was sometimes distinguished from a retweet, which simply reproduces the original text verbatim. Currently, on X, these usage patterns have been organized into the “Repost” and “Quote Tweet” features. Using the quote feature allows you to display another person’s post alongside your own while adding your own comments. Therefore, when describing the current X, it is more appropriate to focus on the difference between “Repost” and “Quote Tweet” rather than explaining the past “RT” and “Retweet” as separate official features. When quoting or sharing someone else’s content, it is also important not to distort the original author’s intent or context.
Hashtags can be used to indicate what topic you are discussing. A hashtag is created by prefixing the word or phrase with the hash symbol (#). For example, using a hashtag related to a specific social issue or event can help you find posts on the same topic. Searching for a hashtag allows you to view a collection of posts related to that topic, making it useful for finding information on a specific subject among the vast number of posts. You do not necessarily have to include an underscore (_) to create a Korean hashtag. Hashtags can be used by connecting words or phrases without spaces, and depending on the service’s search and display methods, they serve as a feature that helps users easily find the topics they’re looking for.
Facebook is also one of the leading social networking services. Facebook began as a service founded in 2004 by Mark Zuckerberg and others while they were students at Harvard University. Since then, as its user base grew rapidly, it evolved into a global social media platform, expanding beyond a space for sharing the daily lives of friends and family to become a platform where businesses, public institutions, and organizations disseminate information. Currently, Facebook is one of the major services operated by Meta and, together with Instagram, Messenger, WhatsApp, and Threads, forms Meta’s social service ecosystem. According to Meta’s Q2 2026 earnings report, the average number of daily active users (DAU) across Meta’s Family of Services was 3.6 billion as of June 2026. This figure represents the combined daily active users across all services operated by Meta, not just Facebook, and should not be equated with the number of Facebook users.
On Facebook, users can post various types of content, including text, photos, and videos. Users can tag others in their posts, add location information, and set the post’s privacy settings. Tagging another user when uploading a photo allows you to link that user to the photo. In the past, these features were introduced as Facebook’s defining characteristics, and they are still used today to connect people and share content. However, today’s Facebook has evolved beyond a service that simply displays friends’ posts in chronological order; it has become a platform where a variety of content—including recommended content, videos, groups, and pages—is displayed together.
A wide range of content related to daily life is posted on Facebook. Users can share a wide variety of content, ranging from stories about where they went or what they ate to photos, videos, and posts about their interests. They can also add location information or tag other people. While the feature of sharing daily life with friends and family was particularly emphasized in the past, users now frequently encounter content from accounts or Pages that aren’t their friends, based on their interests. Therefore, although Facebook began as a platform centered on personal relationships, its nature has expanded over time to become a platform for discovering and consuming content.
Facebook offers features such as friends, groups, “Likes,” comments, and sharing. First, users can form friendships on Facebook. Generally, a friendship is established when one person sends a friend request and the other accepts it. Once friends, users can view each other’s posts depending on their privacy settings. Users can search for people directly using information such as their names, or use Facebook’s feature that recommends people they might know. It’s also possible to find people you know by using your contacts. However, Facebook isn’t limited to just friend connections; users and content are connected in various ways, such as through follows, Pages, and groups.
Users can also come together to create groups. Groups serve as spaces where people with specific interests or goals can gather to share information and engage in conversation. They often fulfill a role similar to that of past online clubs and can be organized around various themes, such as hobbies, local communities, academics, or work. Depending on a group’s privacy settings and participation methods, the people who can view its posts vary. Therefore, groups are often used as spaces where people with specific interests or connections gather to communicate regularly, rather than as spaces for disseminating information to the general public.
Users can also create Pages. Pages can be used by companies, celebrities, public institutions, and organizations to promote themselves and share information. Companies can operate Pages to promote their products or services, while public institutions can use them to share information related to announcements, policies, and events. Users can view posts on a Page and leave comments or react to them. Thus, unlike profiles—which are centered on personal friendships—Pages serve as a means for organizations or brands to disseminate information to a wide audience and engage with users.
On Facebook, users can show a simple reaction to a post by clicking “Like” or leave their own opinion by commenting. The “Share” feature allows users to pass on others’ posts to their own network. Each of these features influences the spread of content and communication in different ways. While a simple “Like” indicates a brief reaction to a post, comments can generate specific opinions or conversations, and sharing serves to redistribute content to other users. However, who sees a post is not determined solely by whether it has been “Liked” or shared; it is influenced by various factors, such as the post’s privacy settings, user relationships, and the recommendation system.
In the past, Twitter and Facebook had distinct differences in their post formats. Twitter focused on quickly posting and exchanging short messages, while Facebook emphasized sharing a variety of content formats, such as text, photos, and videos. However, X now allows users to directly include photos, GIFs, and videos in regular posts, and X Premium users can even write long-form posts of up to 25,000 characters. Therefore, it is difficult to describe X as a service used solely for posting short messages, as was the case in the past.
Nevertheless, there are still differences in how the two services are used. X excels at the rapid exchange of opinions on real-time events or social issues, and posts can spread quickly through reposts and quotes. In contrast, Facebook provides features for sharing daily life and interests based on various connections, such as friendships, groups, and pages. However, these differences are not absolute. Facebook also allows users to encounter content from people or pages they haven’t directly befriended through recommended content, videos, and public posts, while X offers a variety of content formats, including long-form posts, photos, and videos. Therefore, rather than categorizing the two services as completely different types of social media as in the past, it is more appropriate to understand them as comprehensive social platforms with distinct histories and usage cultures.
Another difference lies in how connections are formed. In the past, on Twitter, following a public account did not require the other person’s consent, so there was a high likelihood that one’s posts would be seen by many people. In contrast, Facebook was structured around the requirement for mutual consent when establishing a friendship. Consequently, Twitter was characterized by following many people to access a wide range of information, while Facebook emphasized sharing daily life within a relatively limited circle of personal connections. If Twitter is like listening freely to the voices of countless people in a public square, Facebook can be likened to chatting with acquaintances in a café. One of the reasons political content and social debates were frequently discussed on Twitter was related to this structure of widespread dissemination. In contrast, a strong culture of sharing personal daily life through photos and posts emerged on Facebook. However, since both services now operate through a combination of recommendation algorithms, public posts, and follow/friend relationships, it is difficult to view these distinctions as absolute characteristics.
In the past, various social networking services (SNS) and social platforms in South Korea—such as NHN’s Me2Day, Daum’s Yozum, and Cyworld—competed with one another. However, as these services rose and fell, many disappeared, and the current SNS market has transformed into something entirely different from the past. Not only X and Facebook but also various platforms such as Instagram, YouTube, TikTok, and Threads are competing for users’ attention and content consumption time. Therefore, it is not appropriate to describe X and Facebook as the two pillars of South Korea’s current social media landscape. While they can be viewed as representative services when describing the social media market of the past, it is more accurate to understand the social media environment of 2026 as one in which multiple platforms coexist.
Driven by ease of use and the widespread adoption of mobile devices, social media has transformed people’s lives by allowing them to share their daily lives and thoughts from anywhere. In the early days, a key feature was the concept of extending real-world relationships onto the web. However, over time, social media has evolved beyond simply transferring real-world relationships online; it has become a space where people form new connections, access news, express opinions on social issues, and consume and produce various types of content, such as photos and videos. In particular, as smartphones have enabled anyone to produce information directly from the scene, social media has come to play an important role as a supplementary source of news.
One of the most significant characteristics of social media is the speed at which information spreads. When an incident occurs, people at the scene can take photos or videos and write posts to publish them immediately. When other users share this content, it can reach a large audience in a short amount of time. In this regard, social media sometimes delivers information faster than traditional news outlets. However, the mere fact that information is fast does not guarantee its accuracy. While news organizations generally report after conducting interviews and verifying facts, anyone can post information on social media, allowing unverified content to spread rapidly. Therefore, while social media can be a faster means of delivering information than news, it cannot always be considered a more accurate or reliable source of information than traditional news.
Ultimately, the most significant characteristic of social media is that it has lowered the barrier to producing and disseminating information. In the past, there was a relatively clear distinction between those who produced information and those who consumed it; however, on social media, a single person can consume information while simultaneously producing new information and sharing it with others. A single person’s post becomes new information through reposts and shares by others, and the comments and reactions to that information generate yet more content. Within this structure, social media has evolved beyond a simple means of connecting people into a vast network where information is produced and disseminated.
This is also why social media has become so firmly entrenched in people’s lives. With just a smartphone, anyone can create and share information, and there is the potential to reach not only their personal connections but also countless users around the world. At the same time, this openness has also created problems, such as the rapid spread of misinformation, misunderstandings, and excessive debates and conflicts. Therefore, to properly understand social media, it is necessary to examine not only its role as a “means of information delivery faster than the news” but also its rapid information transmission, high virality, and the resulting issues of accuracy.
Social media, which was developing primarily around Twitter and Facebook in 2012, has undergone numerous changes since then. Twitter has rebranded as X, and the format of posts and character limits have changed significantly. Facebook, too, has evolved from a service centered solely on friendships into a comprehensive platform that includes groups, pages, videos, and recommended content. Meta’s various services now form a massive social platform ecosystem used by billions of people daily; as of June 2026, Meta’s Family averaged 3.6 billion daily active users.
Social media has now evolved beyond simply connecting people to become a space where diverse activities take place, including news, videos, advertising, shopping, communities, and political expression. In the process, social media has significantly accelerated the speed at which information is disseminated, but at the same time, it has placed a greater responsibility on users to verify the authenticity of that information. Whereas in the past, the structure centered on news outlets delivering information and readers passively receiving it, today anyone can be both a producer and a distributor of information. Ultimately, the true influence of social media lies not simply in its speed compared to traditional news, but in the fact that it has enabled ordinary users to participate directly in the production and distribution of information.
