There is a lot that can be extrapolated from your shopping history, more than you think (e.g. if you've got a new house, a baby, if you have health problems, if

There is a lot that can be extrapolated from your shopping history, more than you think (e.g. if you've got a new house, a baby, if you have health problems, if you're a geek, if you like drinking or not...). And it's not just your shopping history that gets saved. It's your searches (whether you purchased or not), whatever links you searched/clicked to get to Amazon, your wishlists, and so on. This can be said for any website or app you visit regularly. How deep they go and whether they act on this data or not is in question, but Data Analyst positions are becoming increasingly popular for a reason.