Click on the "Everyone" tab on Twitter enough and you'll start seeing... well, the same sort of thing you'd see on Craigslist and other online venues: hookers. Twitter is all grown up! A sampling:

From New York...

From New York...



To China...



To Chicago...



To Washington State...



Oh, you get the idea. It was inevitable, right? An anonymous service; integrates well with a cell phone; includes direct messaging capability. See: someone's making money off microblogging.