The Read Sweater Media blog, which are the people behind Mars Edit, which is an offline web publishing app I’m trialing and very much enjoying, (soon something on that… maybe) wrote a Twitter etiquette guide. This one should be followed by everyone:
Brevity is an art, and Twitter’s 140 character limit encourages it. Don’t compress more than 140 characters worth of thought by using abbreviations, or worse, non-grammatical fragments. If u try 2 hard to fit yr thoughts, it duz not work. You just sound like a moron.