To reiterate my earlier suggestion and others made here,
create a .sex or .xxx or .adult TLD and allow existing sex sites to migrate there
first. There is still a thorny problem if xxxx.com and xxxx.net and xxxx.org are
owned by different individuals, perhaps in that case an entry page at xxxx.adult
which contains only links to the other sites at comxxxx.adult or whatever.As friedrich
says, this migration must be voluntary. There is no way that we will get global agreement
on what constitutes pornography. Even assuming we could, there is no technical way
to effectively police it, no matter how well you construct the spiders or bots or
filters, porn sites (or peacefire.org) :) will find a loophole.
Realistically,
not all porn sites will migrate, many of them are not good netizens. Nevertheless
an .adult domain should be tried and if those who use porn sites vote with their
mice it may be a success. The online porn industry is one of the few pure net plays
making any money. Theft of copyrighted content from one site to another is probably
a big issue. The online porn industry would probably prefer a space where they can
self regulate.
Additionally, a chartered .kids domain should be tried, though who
would manage it is a big question. If one or both of these domains succeed even partially
then we are better off. If they both fail miserably we are no worse off.