Google Translate: "The economy is evolving. And the current recession is the first in which the massive consumer online and use the Internet to search for information about products and services. Google survey gives you insight into the general mood on the Internet, based on searches carried out by large numbers of people executed. Do these search trends consistent with macro-economic indicators? Click on "compare with their own conclusions."

http://www.google.nl/intl/nl/landing/barometer/

Google Barometer is the name of one of the latest official Google blogs
http://googlebarometer.blogspot.com/