Visual Information Tool

Ok, so here's one many have probably already known about for a while, but I just discovered it and find it very useful and intriguing.  Tag Galaxy gives you the opportunity to search images (flickr only I believe) on the web and see them on an interactive sphere in a "galaxy" context with related subjects surrounding the subject of your initial search.  Any sphere in the galaxy can be readily searched and the sphere itself might actually be another galaxy with related subjects revolving around it, ready for further exploration.