I'm surprised no one's mentioned Kik. It's a great platform, and lots of users are switching to it now because of this aquisition. I think lots of people who are privacy conscious will make a move away from WhatsApp/Facebook in the next few months.
What about BBM? Kik completely copied BBM (the founder was an ex employee). BBM is a lot better in many ways, including real groups. Strange seeing BBM not try and capitalise on this purchase of Whtasapp by Facebook.
deft|12 years ago