This addon will find valid coupons from time to time. However, it will automatically apply coupons any chance it gets and you have ZERO control over the behavior. Have a nice 25% off coupon? Awesome! This widget will overwrite it with an expired, invalid, or 5% off coupon automatically as you check out, and automatically hose your purchases. PITA to deal with this plugin and keep correcting it's unwanted automated behavior, on a slow system or connection.