Ah, the boomer/"greatest-generation" version of something like Angie's List. I used to believe in BBB too, until I realized it was just another middle-layer scam, sitting between businesses and consumers, with time-varying ideas over who should pay to either (a) get information (b) control information.
It beggars belief that Yelp has gotten away with it. I have heard from 4-5 restaurant owners the same story: it costs $300 to hide bad reviews. Those that don't pay start getting more bad reviews.
Is there documented evidence of this available? Emails with DKIM signatures, recorded conversations with representatives who can be confirmed to work for Yelp, official Yelp correspondence, etc? Basically anything that can actually make a solid case instead of just anecdotal evidence.
Random call, I am not sure if they followup. Suffice it to say, AFAIK no one has managed to record the shakedown calls.