Twitter 'flat lined' with new user base
edition.cnn.com
edition.cnn.com
They got pigeonholed as being about "what I had for lunch" and they haven't totally broken out of that in the mind of the broader public.
Their internal documents that leaked to TechCrunch indicated that they have a much clearer and more ambitious vision internally, they really need to get that across to the general public.
It feels like there's some internal conflict about their commercialism vs their desire to be hip. That's a hunch, though.