It's not in there? Huh. Must have turned it off. I'll turn it back on for the future, but yes. I am over 18.
C&D = cease and desist from a lawyer. Basically, they don't want us using their ratings because it dilutes them, or something silly like that. The reason that ff.net and several other largish sites don't use the G-NC17 ratings anymore is because they don't want to get into legal difficulties. It's probably not a big deal with small sites like IJ asylums, but since they have specifically said something, I encourage others not to use them. http://community.livejournal.com/fandom_lawyers/10204.html
As for the other stuff, I just like to grumble every now and then. Actually, since the rules implicitly say "no crossposting," I'm happy! Don't mind me :)