My experience with Capital One Shopping was straight forward, welcoming and professional.

SCAM. The extension stays active and tracks your activity. i was Ok with this if I got the discounts they promised. However, 8/10 times their system conveniently "doesn't record" the sale / purchase you made so you don't get your credit. It's great in concept but they have a great way of scamming you by only sometimes recording your purchases so you only sometimes get the promised rewards. Be Aware.

not always but sometimes it gives extra discounts. they addup :)

This app always finds some deals to save you some $$$. Browser integration is awesome - no additional effort needed on user part.