What to say, what to say...
Well, I'm 24 years old, have been addicted to Twilight since I read the first book in the middle of December 2008, so I've basically only read Twilight fanfiction on this site at the moment, but I also read some Jane Austen fanfiction from time to time, although it's been a while.
I usually like to read about Bella and Edward and Jasper and Alice, and I hate it when they don't end up happy. There is to much bad going on in the world, so I don't feel like reading about it in fiction as well. Oh, and I have to add after reading a story I really didn't like, I hate it when you guys try to pair up Bella and Emmet (and Edward and Rosalie for that matter), ewwh!! I like it when they hang out, but nothing romantic.
Since I'm quite new at this page, I still don't have a clue what you are talking about when you mention all the cryptic fanfiction slang like "ooc", but at least I finally got what AU, AH and lemons mean ;)