A Soc Full of Nets

After signing up for CityTrex, Dopplr and GoodReads this weekend (and sprucing up my Upcoming.org page), I have to ask, how many freaking soc nets can one person join before the utility wears off? Despite the clear value in each individual offering, there has to be a limit, right?
Of course, it’s a big part of my job to know what’s happening out there in social media land, but still. And the thing is, I’m not even close to being on all of the “important” soc nets. I’m not on Pownce, for instance.
Anil Dash is on MySpace, but not he’s not active there, nor supportive. Here’s the headline he’s running on his page:

I keep thinking someone’s going to create one place where all this functionality and content can co-exist in perpetuity. Facebook is the closest thing we have at the moment, thanks to their open source widgets which allow users to import some of their outside soc net data, like photos from Flickr or bookmarks from del.icio.us.