my issue isn't impact on the guys that don't play, it's impact on the consumer from the guys that do. a crappy restaurant that has 5 star reviews because the bad ones were paid off hurts me financially.
isn't the whole point of a review system to influence people's decisions?
i'm certainly not saying that yelp is stealing money from me, but trusted (yes, only to a certain extent) information is trusted information. if misleading, there are consequences to the consumer.