Are there too many social networks out there?

Last week, I had the honor of being a guest on G4's Attack of the Show with Forbes deputy editor David Ewalt, as host Kevin Pereira grilled us on whether we're reaching a tipping point when it comes to online social networking. I think the general answer was "yes and no"--yes, we're reaching a point where most new entries into general-interest social networking sector (hello, Pownce, Flux, and Mash) have a rather uphill climb ahead, but no, this stuff's not going to go away altogether.

P.S.: Do I look like I'm twitching on camera? The Javits Center will do that to you.