It seems like most of the personalized ad systems haven't figured out that if I just bought an item the last thing I need ads for is more of that item (or diffe

It seems like most of the personalized ad systems haven't figured out that if I just bought an item the last thing I need ads for is more of that item (or different brand/models of the same thing). If it kept track that you'd bought a bike and a headlight & rack but hadn't bought saddlebags, and then showed ads for saddlebags until you bought a set they'd be somewhat useful. Instead you just get ads for more bikes and headlights & racks like you're some sort of deranged bike collector.