Was Googling something random earlier and one of the titles of the pages that came up was something like 'Adsense Stats'. I had a look, and basically, someones running a click-tracking program, which outputs through a php page, which has somehow got indexed by google - making this persons clicks and destinations all public.
I'm guessing Google wouldn't be too happy about this. If you are running a click-tracker like this, you might want to check it's not getting indexed - and if you aren't, you might want to see if your competitors are . . .
Roddy