To tag the galaxy
I don’t normally think much of the mashup sites out there. Most of the time they seem to just be pretty useless and too slow to be any fun. Although it looks like the Tag Galaxy is different. Everything loads very quickly and it helps you to see what tags are related to each other on Flickr. Now, I know you can figure that out for yourself, but sometimes it helps to have another opinion about what other tags might be related to a given topic that you may not have thought of. I would find this site pretty useful if it just listed tags that were related to each other, but it does more than that. It shows you how closely related one tag is to another by the orbits of the tags around the one tag you type into the system.
As found on Frantic Industries.
