This deal has ended.
Through Columbus Day Weekend, Restaurant.com is taking 70% off Chicago dining certificates via code SALE. This drops $25 gift certificates to restaurants including Blue Frog's Local 22, Giordano's, and Zocalo from $10 to $3 each. You can search their vast selection of participating restaurants by zip code or neighborhood. Note that every restaurant has individual exclusions, like alcoholic beverages and minimum spends.