As a sidenote, I wonder if the porn industry will adopt bitcoin; one of the biggest challenges they have are chargebacks (i didn't order circle jerk 5, how the hell did that charge show up on my credit card?!). They loose millions because of this. Bitcoin being anonymous - good for the buyer, chargebacks not an option - good for the businesses.
Where would the internet be if it wasn't for porn?
I wouldn't be surprised if they already did but the problem is that it would only serve to exacerbate the negative image BTC has as funding the immoral pursuits of the world. Not that I agree with that notion but must always take into account the mindset of the 'mainstream' as that is where BTC aims to be.