I have friendster. A friend of mine got me to join. More like bugged me to join. But it's not so bad. It's free and unlike most sites they don't ask for tons of info on u.
What is it u say? I'm still trying to figure that one out. hehe. I think it's just a way to keep track of all of your friends. There are no pop-ups and very few ads. It's still in beta so that might change, but still nice for a free website.
One cool thing about it is that you are linked to all of your friend's friends. They have a gallery section where u can look at who are all those people u're linked too. So, in effect u can say "yah, I have 400,000+ friends"
It seems to be the latest internet trend. Who knows how long it'll last. The e-mail I use is fattybaby1@yahoo.com.