The application for this domain zone was repeatedly applied, but it was stubbornly refused.
In the summer of 2005, ICANN made a preliminary decision approving the idea of creating a pornographic domain, but under pressure from community groups, the decision to launch the domain was suspended in December 2005.
But on March 12, 2010 at the ICANN conference in Nairobi, the issue of creating this domain zone again arose. However, the final decision on this controversial issue was postponed for at least 70 days.
June 25, 2010 at the ICANN conference in Brussels, the creation of the .xxx domain zone was approved. The first sites in the .xxx zone may appear in the beginning of 2011. In total ICM received preliminary applications for registration of 110,000 domain names in this zone.
Plus
What can be a plus, when we can have a whole zone for porn?
A large number of pornographic sites will be there, where they will be searched - in this zone. So it will be easier to filter those who are not going to look for such content.