source:  http://www.google.com/trends/explore#q=bitcoin&date=1%2F2011%2025m&cmpt=q

Historical prices when "bitcoin" search levels were about the same as today:

January 2013 - $14.50
September 2012 - High volatility but around $10
January 2012 - $7
September 2011 - $7
May 2011 - $5

Additionally if we look at the graph, bitcoin prices roughly correlate with search volume until June 2012 when the price was $5.  I would think there would be a small rise in the price of bitcoin because some people buy it and forget it.  Thus, these people do not do "bitcoin" searches that often.  But I do not think this type of buyer justifies a doubling of the price from a year ago when we saw similar search volumes.  Search engine volume says you are overpaying for your bitcoins today.  I think we could see $5 or $7 in 2013.