Twitter allows users to post short messages (tweets) of up to 140 characters and interact with other users through following and direct messaging. Key features include hashtags to categorize tweets, lists of trending topics, and retweeting content. However, false reports and eyewitness accounts on events can sometimes spread on the platform. Wikipedia is an online encyclopedia that provides freely editable information on various topics. Articles contain titles, subheadings, images, and references to structure information for users. Users can navigate between articles through hyperlinks and see related topics or discuss page improvements. The site aims to be a reliable, objective source of knowledge on different subjects.