My facebook network is comprised mainly of the following groups:
1) People I looked up or added as a consequence of finding them being a friend of someone I looked up in this network (High School, College) After the initial add and may a "hey, long time.. " back and forth I don't talk to them much afterwards if at all.
2) Select few from work. As you can tend to air dirty laundry on there I don't necessarily want everyone in the office seeing me posting it.
3) Political people I meet at rallies. This is probably the bulk of my feed updates.
4) "Real" friends, (not that there is no intersection between this one and the above) but I'm usually in more direct contact either by phone, email, or IM than communicating through FB
I used to have myspace but I haven't logged in or even thought about that for months until now.
(and i must admit my recent guilty facebook pleasure is mafia wars, i'm about level 110 or so)
A personification of websites I recently saw. Not that I completely agree but think it's funny because probably fairly accurate.
