These affiliate links are managed by Skimlinks, which Pinterest experimented with for a short while, initially without disclosure to users. Of course, in that case, the money would have gone to Pinterest; PinDollars delivers most of the funds to the end users.
Skimlinks retains about 30 percent. PinDollars creator Chris Hedgecock said that he hasn’t talked to Pinterest yet about what the service; because of that he's unclear as to how long he will keep it going.
He currently has 100 users after a weekend launch, including us. However, there are a couple of things in the Pinterest Terms of Service that could cause issues:
and a ban against being able to "upload content to, or create new links, reposts, or referrals in the Service through the use of any engine, software, tool, agent, device or mechanism (including automated scripts, spiders, robots, crawlers, data mining tools or the like) other than the software and/or search agents provided by Pinterest or other generally available third party web browsers" (which could exclude this bookmarklet).