An experimental site (credited to christian langreiter, synerge digitality oeg) generates a comparison between search results located by Google and Yahoo.
The comparison appears as a series of circles associated with the first 50 (I think) results generated by each search engine. Common hits are linked by a line. You can move the cursor over a circle to identify the site.
This is cool and it must generate some useful information or promote some insight. Like what? Search engines return unique results. Try several search engines. etc.
