From Fan History WikiMarch 2008, it was being utilized by fans for microblogging at conventions and for as a news feed in communities like anime and X-Files.
On March 27, 2009, ValleyWag ran an article about celebrity impersonators, fake Twitter accounts and ghost writing Twitters for celebrity brands.  A person who posts as Chris Walken explained why he did this, saying:
- I simply enjoy writing for voices other than my own. When I post a "cwalken" update I am hoping to write something as I would imagine it spoken by Christoper Walken. The politics, tastes and observations are my own. That is — I am not trying to speak for Christopher Walken. I am simply borrowing his voice and reworking my words in his cadence.
- Some people crochet, I do this. 
In September 2009, the NFL announced it was banning fans from live updating of the games on sites like Facebook and Twitter. The league was also planning to crack down on fans who video taped segments of the game to upload on sites like YouTube. First they would warn fans against this behavior. If the fans did not take corrective action, the league announced that they would try to sue fans.  The league claimed it needed to take these steps to protect their income from exclusive broadcasting of games. 
- Twitter: Official site