Right now, the user registration is being handled by a collection of small programs called Community Builder. I'm still trying to tweak it and see what all it can do, so you might see some changes in the near future. I'm not fully convinced it's a good fit for the site, although it does allow users to upload pictures, and I think that is a nice feature, so I'll be looking at my options again in the future. I'd appreciate any feedback you have about the registration process and user features.
User registration with Community Builder
