Unless Twitter can come with a new fresh ideas to make their user more engage and hook to their services than some other service may take the lead (i.e. Tumblr, FriendFeed even Microsoft thorough their OfficeTalk)
I know I will be curse like hell by social networking preposition and social media expert. But look at the bright side, maybe they don't stay long enough and care to read this post if they came especially from social networking site. The main culprit will be Facebook, since they're ...