I don't think SR cares, their operational costs are likely minuscule compared to the profits it generates and if was a vendor I wouldn't be using Mt. Gox at all but rather localbitcoins, #bitcoin-otc or another bitcoin to cash service.

The people who sell legal goods are screwed but they have been between a rock and a hard place for a long time with the wild price fluctuations and all. Accepting Bitpay who instantly convert your coins to USD seems like the only viable option. Bitpay probably has accounts across all major exchanges (Bitstamp, Gox, Tradehill, Campbx) and maybe private partners who are willing to take the coins of their hands.