I just got an email from Dynadot saying that you can buy your .ninja domain ending. http://www.dynadot.com/domain/preorder.html I checked, and the big ones like www.bujinkan.ninja are not bought yet. Of course, you may be opening a can of worms by buying something like that, but it's still kind of cool. AoG
They're visible. I bought a .photography one for my studio. http://hubbard.photography link should work