what ever happened to the .xxx and .sex idea
 

i was sure you could register them somewhere once but i just type in sex.sex xxx.xxx the first that would go and nothing. I thought i saw them for sale once i was gonna look up old threads.
Im sure i would have actually bought a few if i actually saw them maybe i saw someone promising to reserve them or something i dont remember
http://www.wired.com/news/politics/0,1283,51975,00.html

they were not "official". i believe they were not recognized by icann, but you could get them just in case... there were problem beyond that, i believe.