Avoiding 'deep linking'
Interesting use of HTTP modules:
I had a problem where someone linked to one of the images on this site (actually problem still exists), basically a 2mb+ image was being displayed on some forum (I won't include the link :-)) which used a huge amount of my bandwidth... Well, here's a solution, also a pretty nice display of using HttpModules...he also has some nice, hi-res wallpapers here (wouldn't try to deep-link them though :-P)
Scott, noticed your post ID? 666 ;-)
Update: fixed the link to the wallpapers.