I've used Pinterest for a couple of years or more to save images of cars, motorcycles and houses and the ads are just as terrible for me. I almost never get on there anymore because of the garbage they are pushing on me. Just not interested and it ruins the entire experience to have to wade through these terrible ads that have nothing to do with how I use the product (or anything else related to my life).

-edit-

The suggested pins for me are just as irrelevant. I spent quite a bit of time marking each irrelevant pin and ad as such, but it didn't seem to help. I finally turned off suggested pins, but ads aren't optional.