Curious observer here. Since he's not a Yelp partner or customer or anybody, why does he have to worry about their TOS?
"By accessing or using the Site, you are agreeing to these Terms and concluding a legally binding contract with Yelp Inc., a Delaware corporation headquartered in San Francisco, California ("Yelp"). Do not access or use the Site if you are unwilling or unable to be bound by the Terms."
https://www.eff.org/deeplinks/2010/07/court-violating-terms-...