However, if smart IT guys at office has blocked installing of any software, try the web based version that does not require any install.
SpreadTweet [via] is a cool way to trick and use Twitter at work. Caution: someone might still catch and fire you – be safe while you tweet!
After signing into your Twitter account, Spreadtweet displays your messages as cells. Want to send a tweet? Just click the in What are you doing? field (normally where formulas go) and type your message.
Spreadtweet requires Adobe Air. If you don’t have it or aren’t allowed to install it, there’s a Web-based version that’s not nearly as good — but probably better than nothing if you just gotta tweet. Love this thing. It’s ingenious and kind of hilarious.