Yelp's database is largely user-driven - businesses do not have to be hip to technology to appear there. The presence of a business on Yelp speaks more to the t

Yelp's database is largely user-driven - businesses do not have to be hip to technology to appear there. The presence of a business on Yelp speaks more to the technological savviness of its customer demographic than the business itself. That said, I actually know a piano mover in NYC and he's not on Yelp, or any website. His business is very much conducted via word of mouth and physical exchange of business cards.