Here's an example of why. This week, members of Chili's email club are getting a coupon for a free order of Chips and Queso dip when they purchase an entree.
Click here to get the coupon.
This offer is good through March 25, 2012.
It's also a good idea to "Like" your favorite restaurants and retailers on Facebook. You'll often find similar offers and freebies that way as well.