[rossdavidh]

Same here; I know people who are tech-averse (willing to use smartphones, Facebook, etc. but not interested in knowing anything about how it works) refer to Yelp's unreliability, without bothering to explain it. In other words, it's a known fact not needing to be explained, because they assume everyone in the conversation already knows it. I think their reputation is probably a net negative, by now, and their technology certainly cannot help them with that.