[dezwald]

LandLandon, BBM is so popular for the reasons mentioned above. But the main reason is because it comes pre-installed with every blackberry - Just like Microsoft and Internet Explorer, you might as well ask the same question as to why Internet Explorer on windows is the most popular web browser in the world? when at the same time, it's the worst/most hated.

Ted Livingston worked for RIM and saw problem, a big gap that needed to be filled in. Which was, taking the best black berry app and making it accessible on every major smart phone out there.