Now Officially 'Tweeting'

"Updates" in Twitter are now officially known as "Tweets".

http://mashable.com/2009/07/27/updates-tweets

"Since pretty much its inception, Twitter (Twitter) has asked you to “update” your status, whether by web, by application, or by text. Unofficially, this has been known as “tweeting,” but that isn’t language Twitter ever used on its website.

That is, until today. Twitter has begun to change the use of the word “update” to the word “tweet.” It’s a small language change, but carries implications for the microblogging startup. This comes off the heels of the news that Twitter trademarked the word “tweet” and the AP Stylebook declaring “to tweet” legitimate grammar."