CouponMate currently saves you money and time in two ways:
1) Automatically finds coupon codes at over 100,000 stores without leaving your browser.
2) Automagically applies the best coupon code for your cart at over 1,200 stores.
We think the web-based model is outdated. Most savvy couponers hit Google, search for the brand they're about to make a purchase at during checkout, visit a few coupon sites and apply a handful of codes hoping one will work. We can tell you from personal experience -- this process sucks.
We're trying to remove the pain for consumers, offering a browsable panel of coupons as they surf and prompting them during checkout with the "Find Best Code" functionality to automate that entire tedious process.