This is a small site that also contains fanart. it is well sectioned and ships mainly Harry and Ginny, as well as Ron and Hermione, and Lily and James.
This site has many fanfictions... i personally have a hard time navigating around it... but that may be because i have no patience :P but is still a very good source for fanfiction.
Very good site. Explains spells, how they originated etc. there is also much more to this site but the link goes to the spells portion. Though it is very easy to access the rest of the page.