Technology, Books and Other Neat Stuff

This sounds like a very commercial product. The first thing I thought about was the number of websites which tell you not to touch anything while they're processing your credit card, for fear of charging for the same thing twice. I know this puts some potential customers off - it's one of the things that makes people nervous about using credit cards online - and that it costs companies time (and hence money) to put right mistakes where it does happen.