Amazon suggested I use this extension to help promote the use of their Amazon Smile website that supports charities each time I place an order. While the extension has no problem pointing me to products on its Smile site when I'm browsing products on competitor websites, the extension ignores me browsing products on its main website. As I've a habit of typing Amazon's main URL, the extension has turned out to be unhelpful as I rarely remember to visit its Smile website URL when purchasing products on Amazon.