You may have noticed the "scav08" tag at the bottom of each ScavHunt 2008 post. It was suggested on the Judges' blog that, this being the networked, tagged, Web 2.0 world that it is, everyone use a common tag when putting up blog posts, pictures, video, or what have you. And it's working! Flickr and YouTube have a fair amount of content under the tag already.
But I suggest just Googling for Scav08. For one thing, that will pick up people not using the most popular photo/video sharing sites. For another, you'd have found this blog that way, too.