I was going to post this under Bob Hubbard's post on What is Ninjutsu?, but I figured it was a bit off topic to do so. So, in the wiki article on Ninjutsu Bob linked to(http://en.wikipedia.org/wiki/Chunin#Development) it states that jonin, chunin, and genin were a ranking system for the ninja. This goes in line with what Stephen K. Hayes has to say on the matter in a few of his books (and I know to take those with a few grains of salt). However, I've since heard that is not what they were (though that's the extant of this new information I've picked up). Anyone have information in more detail on the three terms?