true any merchant that accepts BTC as payment probably does not hold it but exchange it for fiat.
http://www.coindesk.com/overstock-ceo-patrick-byrne-1-6m-bitcoin-sales/Actually Overstock's CEO came out and said they would hold 10% of all BTC purchases as BTC. So they aren't dumping everything.
He also stated he was looking to push BTC use down into the supply chain and was willing to cut deals for those that choose to accept BTC.