Not sure if this the right area to post this, but I'm new Not trying to promote anything here, so I'll keep it vague. Anybody who is interested can PM me. I work for a new online marketplace, taking on Craigslist We have created an iFrame version so that site owners can embed the marketplace right into their sites. The monetization comes about by a commission paid to site owners for every transaction. So it is a type of affiliate agreement, but the transactions all take place on the partner site - not on our site.