I just realized, you're almost to ONE MILLION words in length. Holy crap! I have to say congratulations on making it this far, I'm looking forward to you passing a milestone few authors are capable of passing in a story. The only one that comes to mind as of right now is Third Fang's "Yet Again, With a Little Extra Help". A very good story.
With Eroninja, I like that while you have lots of delicious smut, you keep the plot moving, and you don't get bogged down with too much useless text. The only other smut story this length I know of is a Harry Potter fic by SamStone. Unfortunately, while his chapters are around 30K words, they tend to be redundant, and it becomes apparent that you could reduce his chapters to 1/3 the length and still keep all the important stuff. With yours, I don't get that vibe at all, which is definitely good.
Anywhoo, keep up the good work Boss!