Yelp is integrating OpenTable’s reservation system into restaurant profiles. The OpenTable reservation can only be viewed by registered users viewing participating restaurants. OpenTable currently works with about 11,000 restaurants.
If you use the same e-mail address between Yelp and OpenTable accounts, then you can receive OpenTable points if you make the reservations through the Yelp business pages. OpenTable has seated about 24.2 million places in the last 2 quarters. [TechCrunch]