Myspace, I agree, but Facebook is something alltogether more significant; social networking refined and optimised to the point of making Myspace look like a clumsy school project (ironic, considering myspace was started by a corporation and Facebook really was a school project).
It was only a couple of weeks ago I capitulated to my friends' demands and joined Facebook. Already my network is a fair representation of my offline life. Sisters, cousins, uncles, aunts, friends, hook-ups I had in college. I'll log into my home page to see what everyone is up to today. Creepy? Yeah, but it seems we're all getting used to the idea.
I can really see fb or something similar becoming the default home page for people's lives.