Posterous just bought Twitter...
http://blog.posterous.com/big-newsGreat news for the Posterous team (if that's what they wanted).
However... what's the ETA until they get Borg'd into something else at Twitter, and Posterous vanishes? What are the odds that this happens?
To me, this is an immediate call to action: stop using Posterous, move to something new now, and save myself the trouble later.
Not that I was using Posterous much recently, but...