Stars?

So, I've been here for, like, a year, and I still don't know how you get stars on your stories.
I just looked and my Christofer Drew Ingle (Never Shout Never) Fan-fiction "Go To Chicago And Forget About Me" has one star.
I mean, I've gotten stars on my stories before, but I've never known how or why.
So, how do you get stars? Like, what is it based on? How many views you get; how many subscribers you get; or how many comments you get?

LOL, I'm so stupid xD



But, anyways, I went to the mall today, and they had cupcakes. I was going to go Vegan today for Animal Rights Day, but then I saw a cupcake...And, it was all down hill from there.



But, it's okay because it was a Black Forest cupcake :D

~

And, Christmas, it's like 15 days away...And, I'm so excited :D But, kind of sad, because time's going by so fast D:
But, I'm mostly excited. :D I'm getting a present tomorrow! WOO :D