Actually Its very good decision or not have to think about this for BTC image because BTC is the part of very huge World Financial Organisation. Yea it's very good for business but for goodwill & images have to think. Some people will take this is positive decision and some people will take negative so it's important for get well decisions.
i think if big porn websites start accepting bitcoin and actually accepting bitcoin becomes a popular thing, then we can see a huge number of people start using bitcoin just because of that.