ok, so I had this idea for a website (although I'm sure it already exists, I just can't find it) -- essentially, you would register, and then you could make a list of all your friends, and as they register, you could see their lists of friends and their locations...and it would create like a "family tree" kind of deal for up to a few generations (like maybe to the friend of a friend of a friend) cuase this would be a fab way to network -- like if I wanna take a trip to San Fran, I could look at the list and contact John Doe and be all like "hey! I'm a friend of Dick who is a friend of Jane, and I need a place to crash in San Fran.." that would be cool...now I'm sure somebody out there has already done this, but I just don't know where...so if you could either send me in the direction, or if you know how to do fancy things with a computer and you wanna create a site like that, that would be way cool...