I'm doing a little research and would like to know what your top social networking or social media sites are. I especially want to know about sites that have some concept of "friend" or "follower" or "contact". That is, sites that let you create relationships with other people on the site. I'll give you my faves for starters:
You can reply in the comments to this post, on Twitter by @ or DM to "joec0914", or by email to joec0914 [at] gmail.com. All respondents will get an invitation to test a new site in a few weeks.