I don't usually write fanfiction, as a teacher and an author I prefer seeing stories that are well written and writing original stories with original characters, but if a story about somebody else's characters won't leave me alone, I have to do something with it.
I like to read other people's stories. I do, however hate slash, songfics and stories with author's notes in the middle of the freaking story. Please guys, keep it to yourselves. Imagine reading a novel and finding that the author has added crap that you don't care about every other paragraph. It's ridiculous and so unprofessional. If you find your story in my favorites list, you've really done an A+ job. Congrats to you!