Nice post… One thing that’s been interesting is that folks like Facebook and myspace haven’t really been able to connect the “who” with anything else, despite enormous success with linking people together.

We’ve been pretty successful linking people by “where” and “what” getting them to participate into massive local and category based forums (nearing 100k post s a day).

So, I’m not sure you need to solve the unified field theory to win here

Also, outside.in is a great site, but they haven’t cracked the code to grow the thing (go check out, oh, say any town with less than 50,000 people in it). So, the ability to go broad and deep within local is something that I think you need to win here…

Anyway, interesting discussion…