I've run promotions for over 50 titles and most of those titles hit the free erotica best-seller list. At the end of the list, between 95-100, these titles had free-kindle rankings of around 900. There were fluctuations, given the time of day, but overall these numbers were fairly consistent.
Weirdly, the last story that I gave away hit the best-seller list at a free-kindle ranking of 1,400. That's a huge downward shift and I'm trying to wrap my mind around this change. It's such a large shift, stunning really, that I have a hard time believing that it happened naturally.
Any thoughts?