Some sites are reporting that Cuil, a competitor (hopefully!) to Google in search, is breaking their sites when their searchbot comes to index content.
Read more at: http://techgage.com/news/cuil_taking_down_some_websites and http://blogs.zdnet.com/gadgetreviews/?p=338&tag=nl.e539.
If these reports are true, Cuil may need to quickly improve their indexing processes, or some sites may begin blocking Cuils search bot.