Promote and get genuine sign ups

Hi, I need someone to promote a website on all possible places like facebook ,twitter, get genuine signups (free) for both employers and freelancers. The details will be provided to selected bidder, he or she shall earn 10% of the site profit every month Payment monthly via paypal or bank transfers to indians on 10 th of each month. Remember : if things go smoothly, this can be a long term work with added bonus. Happy bidding.