silvermisery

Fanfiction of all kinds can be found or posted here.
www.mugglenet.com

Everything about Harry Potter, from transcripts of interviews with JKR, to pictures, to fanfiction.
HTML guide

Yes, I realize you haven't played neopets since you were like eight. (Or maybe you still do. Then, good for you!) But it has a good, basic HTML guide that isn't hard to understand and works pretty well.
Pstibbons Profile

This girl's profile has a ton of rec lists for all sorts of pairings and fics, as well as recommended stories.
Translator

In case you ever want to translate anything into any language. Not for those who are interested in semantics or sophistry, but pretty accurate.