I’ve been using Storm 2 for about a month. Well, BlackBerry is famous for its messenger – called BBM – which implies cross PIN recognition for communications. Well, now I think it was mistake by starting using it for sometimes.
I prefer to use the pushmail, simple yet efficient. Well, I don’t share my PIN and using BBM frequently now. But yes, you still contact me through email as fast as BBM. And its safer within the server of trust.