Who Needs Merchants Anyway?
Hoarders are more important than merchants. If a restaurant downtown starts accepting bitcoins, this does not necessarily create an incentive for anybody to buy more bitcoins. Why would anyone bother if they can still just use a credit card? If you can convince a merchant to accept bitcoins and stop accepting dollars, then I’ll be impressed.

Unless a merchant is offering something that cannot be bought for dollars, or at least offering a discount, he is only benefiting Bitcoin to the extent that he encourages more hoarding. If he immediately converts the bitcoins he receives as payment into dollars, and if his customers only buy bitcoins so as to spend them at his shop shortly thereafter, then neither has much direct effect on Bitcoin’s demand. The real hero is the hoarder behind the scenes who buys from the merchant and enables him to convert his payments into dollars.