Weird thing. I've set up an alerts to watch how often Mediapartners bot visits my page ... everytime anything with useragent string "Mediapartners-Google/2.1" visits my front page i receive email, which also includes visitors IP. This time i accidentally clicked the address in the email (216.155.200.232) and it led me to Atavista homepage.
Moreover, when i used Visualroute to trace the address, it got resolved as
bff202.search.dcn.yahoo.com
what is it supposed to mean?