Gaming Social Networks

Yes. I am aware that I've posted about this once before. But, as I've looked around, I've found a bunch of them, several of which I've signed up to. Why? Because I'm really curious about which is the best of them to use. Currently, I would have to say that it's kind of a draw between Playfire, and gamerDNA. However, I'm going to make a list of all the possible sites there are. Note: This isn't EVERY Gaming Social Network that is out there. I'm sure there are many more that people can find.

Playfire.
gamerDNA.
Pwned.com.
Gamefriends.
The Backloggery.
Rupture.

If you have had a wide selection of games, and wish to list them all, I'd recommend signing up for Playfire as they seem to have pretty much every console covered.

If anyone is signed up to The Backloggery, they'll have to let me know what that's like as they're no longer accepting registrations. Also, any other recommendations, let me know.

Does anyone know what happened to Rupture anyway? I've checked it several times, only to get the following message.

Rupture is down for maintenance. We are making upgrades to our platform so we can continue delivering quality service to gamers all over the world. Thanks for your patience, please check back soon!

How long has it been like this, and does anyone have any idea when it's coming back because I would like to try it out?