Here are some links to some good sites
It's All Relative
An anime in prose written by our own Amerie Cobb
MuggleNet
The best Harry Potter Website out there
Potter Puppet Pals
The funniest thing to hit the Potter world since the Weasley twins.
Chamber of Chat
CafePress
A place to buy unique Harry Potter Merchandise
Click Here for a Quick List of Ravenclaw Merchandise