Zeer

This is the kind of site that should have been built years ago. Zeer displays the nutritional labels for every kind of packaged food you can buy, then lets users rate and comment on their favorite items. Wondering whether you should give Doritos Hint of Lime–flavored chips a try? At Zeer, 14 out of 20 people give them the thumbs-up and will tell you exactly why. While the USDA's National Nutrient Database has offered similar information for years, Zeer is so much better designed — with a focus on real products instead of hypothetical portions of generic food items — that you might actually use it.

—Anita Hamilton