The site has a listing of most highly rated stories. And it has a list of most reviewed stories. And then it has a listing of the "overall most popular stories." When I looked at that last listing, it had nothing to do with the number of ratings or the level of the ratings. The only thing that I could figure out was that it had to do with the number of people who clicked on the story. My guess is that I could write a totally nonsensical story and title it "Lesbian Snuff Queens Captured By Mind Stealers and Given to their Great Danes" and get enough hits to skyrocket to the top of the list.
I think that "most popular" should have something to do with the number and level of ratings instead of just the number of people who looked at the synopsis.
But then, maybe I am missing something.