[sahadeva]

We are processing the connections so we can show you friends of friends on the site. The thought being that it's much easier to start chatting with someone if you know you have friends in common. If you do signup you can sort everyone on the site by how many mutual friends you have, which is pretty amazing.

Using Facebook also allows us to protect against spammers, recruiters, etc., and we can make filling out your profile easier (though we still have work to do there).

What alternative site would you want to be able to sign up with? Github? Twitter?

Thanks for the feedback.

[SpaceDragon]

I'd like to chime in by saying I'm interested in using the service, but recently quit Facebook like a bad habit and have no intentions of ever going back.

By making registration as Facebook only, you may be excluding some of the best people.

[iusable]

Agree with most here. New baseline for such communities is

- Email/Pass - FB - Twitter - Google

For your specific community, I would consider the following as well

- Tumblr (designers!) - GitHub - (& maybe even) Dribbble