This is probably one of the most awesome and useful sites I've ever seen! I think the site is flawless the search works great, the design is perfect, and the success rates for each coupon is genius.
Sorry I can't offer any advice for improvements the site is perfect, very good job!
Great job! It easy to read and navigate and like that it has relevant images for each coupon, making it easy visually to quickly determine what coupons are of interest when quickly scanning the site.