A line to get out of the room! Before the speech, a long, long, long line waited to get in to see whatwas bar far the highest-profile session of the conference.

Yay. That helps Twitter stay around longer (in the absence of an acquisition by somebody like Google), and gives Tweeters more flexibility around when and where they tweet. It's also cool because you'll be able to tweet about something you care about sooner after the experience of reading it. And you won't have to search much for people who also care about the content: they'll be right there.

But the way this thing was announced here today makes me wonder. It was as if Williams wanted to announce the thing today, but didn't want to give many details about it, and what it might mean. Why is he downplaying it? Is something bigger and better coming? Some other deal that will bring far more revenue to the company?