What goes into a Story Score?

I see that each of my stories has a score. Just over half of my stories have a score lower than 10. Is it documented anywhere how this score gets generated? I'm trying to determine if I should care about this metric.

The score is a combination of the likes and favorites each story has received. If you look at a story and scroll to the end, you will see a Story Stat panel that breaks things down. Only you, as the author, can see it.

thanks, that clears matters up nicely.