It's hosted by Forum One Communications. The event is called the Online Community Business Forum 2007. They've been kind enough to allow me to host one of the sessions. I'm really looking forward to it. 

I've been following their blogs for a while. Bill Johnston is over there now. I had the opportunity to paricipate with Bill on a Web 2.0 panel last fall.

Check out this interview they did with Lee Lefever. I had the opportunity to meet with Lee myself a couple of weeks back. He's a sharp guy. Commoncraft is worth a look too.