So we know there's the standard 24 hour cookie which stays on the user PC for 24 hours, buying any kind of product around the store (not necessarily the one you pointed them to). I've read there is a 90 day cookie, but I am wondering does that 90 day apply to just that product only? Or is it a 90 day cookie that works like the 24 hour cookie, where it applies for anything on Amazon? Can't seem to find much information on this. Anyone know?