Facebook wants BBMTwitter taking market share away from teenager market segment. Teenagers cannot be bothered logging in to facebook especially using Smartphones instead they are predominantly using Twitter. Blackberry will be adding BBM channels to their messaging service which will go head to head with Twitter. If twitter IPO is worth 10-15 billion it is safe to say that BBM should be able to be worh at least 50 percent at 5 billion in future.