Haha, wonder how accurate it actually is. Just out of curiosity I tried a huge number of other terms, and the results from two others seem rather surprising. (Don't open if offended by obscene language :bsmilie: )
This
and
This
Another reason why I feel it isn't comprehensive enough or completely accurate - only searches in English recorded, but not forgetting people in many other places would search using their native language and probably also their own search engines.