In light of the 12/21/2012 "apocalypse" not happening, it should be pointed out that two major disadvantages of living in an age of information are 1) the ease of access to vast quantities of misinformation and 2) the ease with which we can share that misinformation with others.
Think Day should be a day for all citizens to reflect on the information sources that led them astray in the previous year, reevaluate the worth of those sources and adjust their lives accordingly.
It should be a day to exercise critical thinking skills and identify sources of misinformation and wild conjecture presented as fact and then left uncorrected after actual facts became known.