content: Yelp and Grubhub have been "taxing" restaurant phone calls There are lots of problems with online reviews of restaurants.  Yelp's current business model is borderline extortion and Grubhub has it's own shady practices.  However, I didn't know Yelp also redirects phone calls through Grubhub so they can tax restaurants for every call.  Pay attention to which phone number you use because it could be giving Yelp money for nothing.