So that's what the repost function does no LJ.  Doesnt' seem much point if you can't at least leave a note saying why you reposted it...

Still, I really liked that xkcd cartoon.  I think most people who don't read much history tend to forget just how MUCH of it there is.  Then they get shouty if something is left out, forgetting that inevitably, lots of things MUST be left out and every reading is a partial one.