Wouldn't it be better (and cheaper) to move all pornographic sites (real porno, not art/photo sites) to the .xxx domain?

No, instead we have to implement filtering systems that will slow down traffic and cost tons of money that will inevitably come out of our pockets.

Why?

Well there goes the most fundamental reason to have internet. If there is on porn on the internet the only other thing is The INQ :S

That last paragraph does not make sense to me in the context of your article...

Opt out of what service?