IIRC Cryptsy has a referral program and they pay back in Cryptsy points. Never tried it but I think you can trade those for BTC.
"You get two users registered on LocalBitcoins.com, and they do one trade valued 100 BTC. You earn 20% commission on the LocalBitcoins.com trading fees from both participants, in total 40% of the LocalBitcoins.com fee. Your earned sum is 0.4 BTC."
So, you must get someone (or 2 people combined) to put in $60k+ to earn a few hundred bucks. Sounds like a really profitable program.
Try coinbitsapp.com
They pay $5/referral