I don't think that is an issue. The value in Yelp is largely in the reviews, the rest of how it works has been done plenty of times for plenty of different things.

Just like a groupon or stripe, the venue reviews space really needs boots on the ground and some local knowledge to work right, so there is a big opportunity for essentially a copycat model for that market (same as has happened for a long time in china).

Bringing these tried and tested ideas to places just catching up to the rest of the world with digital connectivity is probably going to be very lucrative over the next decade for people well positioned to do so.