I can't wait for everyone to realize that having tons and tons of proprietary messaging systems is causing nothing more than clutter and confusion. I don't need, once again, ANOTHER chat client trying to mimic BBM that only works between users of that specific program.
"Yay! I have PingChat! Oh damn, Jane uses pMessenger. I'll go download that now!!!"
Developers of these apps, here's my suggestion.... stop with the proprietary chat clients. Everyone team up and let's get a truly universal system going on. One of the biggest draws (and reason for the success) of BBM is that "it just works". It's there, there's no special downloading necessary. No wondering if the BlackBerry user has registered and signed up for the specific chat protocol. It just "does". The real BBM equivalent on Android is GTalk. It's just there and we all have it (whether or not you actually use it).