"Frequently purchased together" is a metric Amazon already uses. I also find it bad, a majority of the time. Often because I already have the other item and am

"Frequently purchased together" is a metric Amazon already uses. I also find it bad, a majority of the time. Often because I already have the other item and am buying the complementary item. For example - I already had some weights and was looking for an Olympic bar. When I purchased weights it suggested buying an Olympic bar with them. The largest issue is that I make offline purchases and purchases on other platforms. So Amazon had no idea of knowing that I already had an Olympic bar. This is, of course, ignoring any privacy concerns. [0] [0] http://www.forbes.com/sites/kashmirhill/2012/02/16/how-target-figured-out-a-teen-girl-was-pregnant-before-her-father-did/ http://www.forbes.com/sites/kashmirhill/2012/02/16/how-targe...