Blackberry Messenger coming to iPhone & Android

[brock1]

Even though I?ve used a Blackberry for years, I never gotten around to purchase Blackberry service on it. So I never used the Blackberry Messenger. BB users keep telling me how awesome it is and how different that normal IM/texting. Now it?s coming to iPhone & Android. Won?t take away the exclusivity of it to BB users? Or am I on a wrong train of thought?