I was curious what social networks do you use and what for? For me I am using them to get exposure to my site. I wrote an article about it here. Check it out and let me know your thoughts. Maybe add me to your friends list too.
Sure. mixx, stumbleupon, lastfm, librarything a bit of reddit. My nick is robojiannis on all of them, if ur interested
del.icio.us/arcojedi ... yeah, that's about it. It's a social bookmarking/sharing site. I save sites I want to read more about later or that I need for reference. My biggest tag is for web development - del.icio.us/arcojedi/web-developer
Fark and Digg on one blog, and My Space, and Facebook on the other. They are not all created equal. My Space and Facebook works well for the music blog, Fark and Digg work well for the political commentary blog.
I was going to use twitter and create an account with it but its down. There is really no perfect social network for me to use.