I personally haven't been paid by this site yet - I'm still gathering up referrals.

All you need to do is pay the one-time fee of $3, refer 3 people to that site (and you'll already be in profit), then either keep promoting, getting referrals and earning more, or just letting your 3 referrals do the work and get referrals, which you earn from... 15 levels deep.

Link: http://WorkFor3Dollars.com/