>>12
Well, it's been expanded upon, but every couple years one has to relearn a bunch of things when it's reconstructed differently from before because of some new texts that are released... And one still has to be creative with compound words to express many things since there's no usually designated word for the concept. Nor does it help that sources often contradict eachother, or at the other extreme, rules have to be made upon one or two examples and no more because there are no more!
I don't know about the Black Speech and Dwarfish, though I don't expect Black Speech to ever be usable since I recall Tolkien hated to have anything to do with it.
>>11
It's a form of mental masturabtion, yes.