why don't you promote
money tree's free teen cam program and earn $20 per free sign up. Im know that $20 per sign up isn't much, but the webmaster I already referred to this program does surprisingly well with them.
You might also consider Gamma Cash. They have great teen sites to promote ( young amateurs, all teens, web teenagers... ). Payout only $25 per su, but the ratio is quite good and you'll make some additional money because they send international visitors to a dialer.