I've read a little about it, looked at their site, but for the life of me can't quite figure it out. And I hate places that make you register before you even know if you want to partake! I don't see any list of the networks. I don't see any information about whether you can just sign up for any network, or if more is involved. I don't see anything about whether you can sign up for an unlimited number of networks, or just one. I don't see anything that shows what the networks look like. Am I missing something? I mostly just see promotional-type information there.