best thing i ever did, was to setup automatic emails with AMEX every time my card is used w/out being physically present during transaction. now i catch these

best thing i ever did, was to setup automatic emails with AMEX every time my card is used w/out being physically present during transaction. now i catch these types of things instantly. like that time i signed up for year of free amazon ec2 instance, finding out that amazon charged my card $240 after 2 weeks.. apparently i chose incorrectly during setup and went down a totally different pricing path. unfortunately none of this came up during setup. thanks to that email i was able to reverse it that same day