Block 'vulgar' content
Look, I don't like vulgarity very much. I prefer Beethoven, Rimsky-Korsakov and Tchaikovsky, personally.
But nudity ? I have no problem with that, I must admit, especially when it's a beautiful woman. So sue me.
That said, nudity everywhere is not something I appreciate either, but on the Internet, I have the choice of not clicking on it. So I'm responsible if I see nudity. That doesn't happen when I'm watching TV and suddenly a shampoo commercial (or car commercial) is spewed onto my screen with an alluring young woman. I don't have the choice, there, I have to submit, and most of the time, I couldn't care less.
It's always the same problem : the Internet is global, so the concerns are global. It doesn't matter if we consider an attitude to be backwards and puritan, Pakistan has the right to be backwards and puritan in its own space. The issue at hand is how that space translates into the global Internet.
It's going to be a while before we, as a species, get a handle on this issue.