well i wouldn't be too excited as they have already bought the amazonbitcoin.com back in 2013. But nothing happened ever since. They might be just protecting their brand name. But if major players like amazon and eBay start accepting bitcoin, nobody will be able to stop bitcoin bull run
It isn't good news if they accept Bitcoin, but don't exchange them or pay them out. Remember, Amazon is a major globalist organisation, and Bitcoin is a threat to their aim to create a global currency. If they suck most of the Bitcoin out of the market, it will certainly increase its value, but it will make it unusable as a medium of exchange. Bitcoin may then be forced to increase the supply of Bitcoin to remain viable.