Journalism style mavins taken note. Twitter is now part of the Associated Press Stylebook:
AP Press Release
New edition of AP Stylebook adds entries and helpful features
NEW YORK — Twitter, the social networking tool that has turned millions of people around the world into instant micro-bloggers, has made it into the 2009 edition of The Associated Press Stylebook, along with complicated business terms such as credit default swaps and derivatives that have gained more exposure amid the global recession.
The new entry for Twitter notes that the social networking Web site limits messages to short Tweets. The verb forms are to Twitter or to Tweet.
Glad that’s settled.