I love KH, but as has been pointed out before, it adds a lot of lore to it. The video linked in the article seemed to know more about the Keyblade War than I thought was known. The only thing I know about it at this point is that it was a war between Keyblade wielders and was sort of a Light-vs-Dark-but-no-one-wins kind of thing.
So, this leads me to, what do we officially know about the Keyblade War? What was it about, who started it, the whole shebang.