I heard that if someone click on your amazon affiliate link, and buy any products on amazon in 90 days, you will still get the commissions. Is this true? Does the commissions will be higher if the user buy products from amazon right after click on your link? What will happen if the user click on your affiliate link today, and after a week, they click on someone's else link? Only the latest affiliate link will get the commission? And how do they track it? By browser's cookies, IP address or they only track it if the user sign in on amazon? Sorry if this asked before, I tried search for it, but can't find clear answer.