People are asking “why are people who I don’t follow showing up in my Twitter stream?” If you are noticing that the tweets of people whom you don’t follow are showing up in your Twitter timeline, here’s why.

For those Twitter users who are still using Twitter through a web browser (do people really still do that?), Twitter is beta testing a new through-the-browser retweet function. Not everyone yet has access to this new retweet function, so we thought that we’d show it to you.

Many, many people find themselves a bit lost when they first start using Twitter. They don’t really get how to use Twitter. They don’t really understand what Twitter is. Here is a clear, plain English, real-world explanation that answers the questions “What is Twitter?” and “How to use Twitter?” and that explains the various messaging functions of Twitter such as @, DM, D, Retweet, RT, and #, and including Anne’s famous “Party Analogy” for Twitter.