search engine indexing another search engine?

The experiment i was trying as per my earlier post has paid off. Google will index the search results of live search. The people at live search mostly have not put a robot.txt file to their results. And what do we have. A wonderful result in the form of googleoop.To make it immortal i took a screen shot as well. It is the third result.

Google however will not index its own search results as might be expected. The only page that appears if you do sites restricted search for http://www.google.com/search is the site itself. So no wonder it will not enter a infinite loop. Yahoo seems to be of the results though.