Surely this is good for people who can provide services in BTC. Compared to asking dollars they may be able to ask higher prices then otherwise as they are enabling the economy of Bitcoin and various holders now have a higher utility to just their plain holding. The seller gains revenue and the ability to retain some tiny portion of Bitcoin towards the longer term gains just as the original buyer of their product was.
This is why I think the flow of BTC is vital to its good health and underlying strength even when tested in a speculative sell off, some will find a use still and demand is there.