For your project we have created a tool to invite friends to our site. We need people with good social network skills, with access to facebook pages with real friends to invite friends to our site. You can also invite from Hotmail, yahoo, gmail, orkut etc.
You will first sign up on our site, then start inviting friends. Our system registers the amount of emails send and the amount of people who accept.
We will only pay for people who accept; otherwise one can send invites to fake accounts. Our system will send a mail to the person you invite, who then will have to register. We track all data that is possible to verify if people are real or not.
Our target are UK, USA, INDIA, Europe and others.
I can provide some message guidelines, marketing text etc, if needed.