Members are given a share of your bounty for signing up for offers and trials. Incentive marketing.
Built it as a personal project. All hand coded and on a modified free open source layout.
Paid for 6 months of hosting and a year of the domain (about 9 months left on domain and about 5 months left on hosting).
Traffic is minimum since I am not promoting it. A Google Adsense account is showing the middle page ads and comission junction is supporting all the affilate marketing through them. All payouts and offers are reported and paid through them so you would require your own at http://cj.com
The members area has a database that contains the company name (what CJ puts as the name), about the company, requirements, link code, and payout. This is pulled into a table into the member pages.
You must right now go in and run the reports from CJ and give credit to each member ID depending on the offer completed. I have not automated that yet since I am not really promoting it.
Open to offers.