Garance Franke-Ruta describes the 2nd annual YearlyKos convention:

[T]his conference does not feel as grassroots or exciting as last year's. It feels like a cross between the annual Institute for Politics, Democracy, and the Internet conference in Washington (which draws a who's who in political technology circles), a Bloggingheads.tv marathon viewing session, and a bunch of National Press Club press conferences by liberal interest groups.

Seriously, this is simply another data point confirming that the co-optation phenomenon Henry and I predicted oh so many years ago (it's coming out in a real political science journal very soon! We swear!!) is coming to pass.

UPDATE: More confirming evidence from Matthew Yglesias:

[I]t really was striking to get the visual of yesterday's gate crashers quite literally mingling with the dread establishment at a cocktail party. The question that nobody seems to know the answer to, though, is whether the revolution ended because the revolutionaries won, or because they sold out? The boring, but probably boring-because-accurate, answer is that it's a little of both.