I think this is pretty cool, if for no other reason that it's a next step (not "the") in the evolution of the platforms.

It used to be you wrote a blog. Then you started using Twitter as a toy. Then you linked to blog posts on Twitter. Then you got lazy about updating your blog (i.e. Robert Scoble). Then you used only Twitter. Then you realized occasionally you want to say more than you can Tweet. Then.. Voila!