"In addition to offering a special badge for Foursquare users, Zagat will begin piping tips and recommendations into the Foursquare system, which already doubles as a handy user-generated city guide. Foursquare users can submit their own suggestions for activities and dishes to order at a particular restaurant, which will pop up when their friends "check in" on Foursquare from that venue.

But the Zagat partnership will add a slightly different layer to the content by incorporating recommendations culled from the company's repository of reader reviews. For example, users who check into a Zagat-ranked restaurant will receive suggestions about great dishes or the best dessert on the menu."

The New York Times