Guaranteed free signups(U.S only)

hi , I need U.S members for both my dating site and flash site. I need this done asap, so I am willing to pay good for this. Payment details: Paypal or escrow 100 members gets you $30 200 members gets you $80 300 members gets you $125 400 members gets you $200 All sign ups are free sign ups im just looking to get traffic and get my sites off the ground. Note : this will be ongoing if you can get most active members and i hire and pay you per month involving in various traffic and signup projects which are to come..