Fault 1: Opera asks me if I want to install this Every Time I visit an Amazon page. Tell it not to seems to mean "No, but ask me every time.", which is EvilTM. Fault 2: Once installed, it cannot be disabled using Opera's extension management page, because it gets immediately re-enabled. Workarounds for Fault 2: Install SimpleExtManager and use that to disable it, or uninstall Amazon for Opera.