^^ Except that our userbase is not really that critical. Especially not if they can get a substantial userbase from iOS and Android. Ever since their release on those two platforms my FB news feed has been littered with BBM pins. I don't think there's a lot of incentive for them to release a WP8 app, at least not in the near future. It might even be more advantageous for them to not release a WP BBM app. Which makes me nervous about the entire thing. I don't want another hurdle coming up for us, especially not so soon after we have just managed to get Instagram
(On the flip side, my friends on iOS have commented that there's really no need for the BBM app anymore. There are just too many options for that sort of thing right now. They still went ahead and signed up though. )