Of course I managed to get behind this week. I lost my internet Tues. all day and got busy yesterday so I'm playing a little catch up here.
Leave feedback for a fanwork. Or multiple fanworks. It can be as simple as I liked this to a detailed list of all the things you loved about the fanwork. The key is to leave some sort of feedback.
If you've already left feedback in the course of a previous challenge, it totally counts. But you're free to leave more feedback.
I left Feedback on Pandemonium's excellent story A Glitter of Swords in which an old friend gets a satisfying ending and Aragorn gets a sword.
Oshun wrote a wonderful story for Yuletide this year based on Last of the Wine by Mary Renault. You can find it and my review here: Perhaps Not Perfect
One of my favorite stories of 2015, the amazing Love Over Gold written by Keiliss. It's like nothing I've ever read.