Rags Srinivasan builds a believable model for what kind of revenues Pinterest might be able to generate if it built out an e-commerce affiliate system. You may remember it had a scheme with Skimlinks where it intercepted potential affiliate fees from its users’ pinned links, but it shut it down when it got some bad PR. The potential is definitely there as Pinterest scales, even if the site hasn’t yet started to become a gathering place for influencers. We’ll soon be posting a GigaOM Pro Flash analysis of the outlook for Pinterest based on a survey of GIgaOM early-adopter users. They think marketing services and affiliate fees are Pinterest’s best revenue opportunities.