Please join us on Twitter. This is an online social networking service where users post and interact with messages, "tweets," restricted to 140 characters.
Users can group posts together by topic or type by use of hashtags – words or phrases prefixed with a "#"
sign. Similarly, the "@"
sign followed by a username is used for mentioning or replying to other users.[144] To repost a message from another Twitter user and share it with one's own followers, a user can click the retweet button within the Tweet.