Check out this awesomely simple and sexy Flickr Tag Browser, a little application built by Felix Turner of Airtight Interactive. The application starts with a simple search bar; type in a keyword and it brings up a nice view of images from the Flickr archive with that same tag. The circle of words around the images in the center represent related tags. Airtight is the same group that created SimpleViewer, easily the best free customizable flash image viewing application on the market.
Via Notcot.org
