We run CoinRebates, a rewards program that lets you earn bitcoin rebates for shopping at more than 300 online stores. We want to know which stores you often shop so we can put more emphasis on them, or if they are not already partnered with us, we know to reach out to them.
Why you cannot add amazon and ebay in coinrebates? Anyway, Amazon and Ebay are most likely bitcoin accepted as mod of payment to their site. It's been once that I tried to buy a ledger in amazon site shopping online.