Has anybody played around much with Google’s Correlate tool? Quite amazing, in a frightening sort of way. I found it surfing from this similarly amusing, but less thorough, post. I can come up with no adequate theory to explain the nearly .73 correlation between my scribbled line and searches for “home videos clips” on Google.
However, using a steadily decreasing line, the correlation is mostly with searches for now-obsolete web technologies (how many people now search for “web page” on google?), which indicates, I think, the fact that the meaning of google itself has changed over time.