I started reading this this morning and it drew me in, my eyes ache a bit from staring at the screen, LOL!
It was a compelling story, but I have to admit that I skimmed over the one part where Snape was bottom ;), although it did pertain to the plot and Snape's spell. That just isn't my cup of tea, but that was only a small part of the fic and the rest certainly made up for it.
It was so imaginative and original and I loved it.