And several tell of their own experiences of dining in recommended restaurants.

ECONOMIST: Business travel

He sees a future where people can ask questions that only Facebook has the data to answer, such as what restaurants in a specific city are recommended by your friends.

CNN: Heather Kelly,

In November 2001 Roberts had recommended printing toll-free customer hotline numbers on soda cups and sending mystery shoppers to restaurants to conduct anonymous reviews of service using a hard-number scoring system.

FORBES: You Want Data With That?