This site is kind of like The Grocery Game.  For those of you who don't know, the Grocery Game will track grocery sales in your area and also find online coupons for items you're interested in, so you wind up saving a lot more than you normally would.  However, you have to pay for this service.

I found another web site that does the same thing (without all the fancy graphics) for free. It's called the Grocery Guide.  You just type in your zip code and it pulls up participating stores in your area.  Now, it didn't give me all the stores I shop at, but it did give me one or two, and that's enough for me.