I am so very tempted to buy a very very fine white marker and a very very fine black marker and write page numbers in the Tokyopop editions of Saiyuki. The only things stopping me are (1) my instinctive recoil at writing in books I read for pleasure (it's defacing them, my backbrain insists) and (2) my inability to write page numbers in everyone else's, which limits their usefulness as a shared way to find things.
But still, tempted. (If I went through and numbered the pages once, I find myself thinking, this obsessive re-read with notes would go a lot faster . . . )