I have absolutely no issues with this: 1. It's the most scalable way for them to generate revenue without shoving ads down your throat. 2. Skimlinks doesn't "modify" your links, they simply put it through a redirect to see if it affiliates. The link you've submitted to Pinterest will likely stay as is. 3. If users submit affiliate links already, then services like Viglink/Skimlinks don't overwrite your cookie (i.e. R…
I would think the affiliate programs would be the ones who would have an issue. No affiliate link to adding one costs them profits they wouldn't otherwise have to give away. What's Pinterest going to do if this option doesn't exist, remove the links? No.. they could change the display algorithm to display links with their affiliate code more often, but that may mess with quality of content and click-rates..
Pinterest has every right to monetize their website in the least intrusive way possible. These referal links are transparent and provide a neat way to get some income.
What suprises me is how they are giving away 25% of their profits by using a third-party service instead of making something themselves.