Is it just me, or is Twitter getting more social?

I've noticed a couple of things lately:

1) The A-listers, heavy outputters of information like Jeremiah Owyang and Robert Scoble, have slipped off the radar. They've been characteristically transparent about the reasons why - mostly, they're busy (which is a relief! They're human too!).

2) The rest of us - not especially famous people, but often producers of their own content either blogs podcasts or online video - seem to be commenting more often about more things and getting more conversational.

Maybe it's just that I've recently tapped into a vein of particularly chatty people, and been replying a lot more often. But it's great to see Twitter being used to its potential.