Anyone into fanfic stories about HP?

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Remember when I was 15 and read all books for 10 or more times, and that wasn't enough, I used to wrote and read fanfics. I liked funny stories most of all, but also there were some awful examples (like Severus and Harry love stories).
I liked to write about Severus, who was very sarcastic and much more 'interesting' then he's described in books. Also, I used to write about Hermione without changing the original story plot.
So, are you into writing or reading fanfic stories? If so, describe your opinion.