Has anyone tried to correlate bitcoin/usd price with search trends?
Google has some neat search trends on "Google Insights for Search".
http://www.google.com/insights/search/(if it lets me post a url)
My guess is that a lot of demand is fueled by fame. I only found out about bitcoin a week ago via slashdot.
Looking at May 21-24, there was a small lull in Google Search activity for the keyword "bitcoin", but bitcoin price went up all these four days.
It is possible that there is a time lag.