I think the reasoning is that showing ads, and marking them as such, is just fine. Bumping scores that are marked as customer reviews just because the business

I think the reasoning is that showing ads, and marking them as such, is just fine. Bumping scores that are marked as customer reviews just because the business is buying ads would not be fine. This is not the first time that someone has accused Yelp of doing the latter in addition to the former.