Flickr.com has a new feature called “interestingness” that helps you find pictures that knock you for a loop. Since it is a huge social site, they can see who’s looking at what and how they got there. They can analyze who’s commenting on a picture, what strange combinations of tags are on it, etc. And then they generate from this data a page full of pictures that you have just GOTTA see.
Along the way, it wouldn’t hurt you to join. Maybe you are interesting?