In Apple's WWDC conference, they basically ripped off BBM into imessage. Its a genius move... with all the platforms they maintain from computer, ipad, to iphone. A unified messaging system. This not only would cause pressure to app makers who provide messaging services like GroupMe or Kik Messanger, but kill SMS. Great article from TechCrunch called "Apple Has Finally Stuck A Dagger Into SMS. I Love It."