X.com (formerly Twitter) was launched in 2006 by founders including Jack Dorsey. Initially, it was a social platform allowing users to post 140-character short messages (tweets), before gradually expanding its features and being renamed X in 2023. Its core functions are centered on real-time information dissemination: users can post text, images, and video content (tweets), obtain information feeds through the "follow" mechanism, and engage in interactions such as reposting, commenting, and liking. It also includes features like hashtags, private messaging, live streaming, and long-form posts, combining both social and information dissemination attributes.