I used referal sites to make around $500-600 in 6 months. Just getting referals to win cash on sites. You sign up and complete an offer, and that's about it. But it's hard to get referals when you are at the bottom of the food chain. I used freelunchroom and freeipodguide to get all my referals. If you can make a good advetising thread, you can get a good $6k a month... Some of the big guys get about that.
Then there is also digitalpoint forums. But they mostly sell ebooks... some have good ideas, but I never did... maybe you will?