The downside of affiliate links that I'm aware of is that Amazon makes available the entirety of any orders credited to an affiliate, so if multiple items are ordered the affiliate is able to see the entire order.
Clicking through an affiliate link associates future orders for 24 hours, and once an order is placed no further orders are associated. (If an item is added to the cart while associated with an affiliate link it stays associated for 90 days, but it's not clear to me what information is provided to the associate regarding other items in the order if that item is eventually purchased.)
Clicking through an affiliate link associates future orders for 24 hours, and once an order is placed no further orders are associated. (If an item is added to the cart while associated with an affiliate link it stays associated for 90 days, but it's not clear to me what information is provided to the associate regarding other items in the order if that item is eventually purchased.)
https://affiliate-program.amazon.com/help/node/topic/GPTZ495...