Zagat has free restaurant guides for registering and doing very little (like surveys).

Zagat guides

The latest offer is a free Zagat Washington DC/Baltimore Restaurants 2011 guide. You have to vote, and then click “continue.”

Click here for a free restaurant guide from Zagat.

Older offers:

Get a free Zagat London restaurant guide when you register with Zagat.

Click here to register with Zagat.

This one has been around for a few months and is still active.

Answer a few short survey questions, and Zagat will give you a choice of rewards. Choose one: The Los Angeles Nightlife 2009/10 guide, a 90-day subscription to ZAGAT.com or an entry into the $500 Night On The Town Sweepstakes.

Click here to take the Zagat survey.