I'm usually not one to do this, but it seems like it's on the up and up:
It's basically a social networking site, except that theoretically it allows you to get paid. And it's not really dangerous. When I signed up they didn't ask for any kind of credit card information or any other information that could be used for financial fraud. Just very basic stuff like name and e-mail. And when you think about it if paying their users allows them to increase their advertising revenue it's entirely possible for it to be a win win situation. And worst it'll be another social networking site, and at best it might actually be a way to make money. If you're interested follow the link and sign up. It really is free so if you use friendster, myspace or whatever give it a look.