If you haven't heard of the Zagat survey, I bet you've seen someone using it while vacationing. The Zagat survey is a red, rectangle shaped book that is printed annually and rates most U.S. and some International cities and their respective restaurants. They've also branched out to spas, hotels and entertainment venues.
If you go to their website,
http://www.zagat.com, register and then vote in an active survey, they will send a copy of that survey for free when it is printed. I have Zagats for NYC, L.A., Philly, London, SF Bay Area, and more from the past 6 years and they were all free because I voted in each of those surveys. The surveys are a fun resource as they're compilations of what we all say about a certain city's restaurants. You get to vote on decor, food, service and price. And, if you want to vote on just one restaurant and submit your ballot, that's fine.
This is free! You only pay if you want to SUBSCRIBE to their online services. If you just REGISTER, it costs you nothing.

I think normally the Zagats sell for $12-15 each, that's just a guess as I've never had to pay for mine.
The active surveys right now are:
New York City Restaurants
Los Angeles Restaurants
London Restaurants
Barbados Restaurants
San Francisco Restaurants
Philadelphia Restaurants
Here's a link to the registration page:
https://www.zagat.com/user/sub1.aspx?SG=R&RURL=http%3a%2f%2fwww.zagat.com%2fv ote%2fSurveyRedirect.aspx%253fSID%253d166
This is a great time to do it as there are so many surveys open!
**If you've never been to one of these cities and want a survey, just pick a restaurant and make something up.