Via Businessweek, we learn that Facebook caused the Greek Debt crisis, Global Warming is caused by NSF R&D budget, and other spurious correlations:
Need to prove something you already believe? Statistics are easy: All you need are two graphs and a leading question.
Wonky amusing fun for any statistically innumerate eejit on your holiday list.
Correlation or Causation?
BusinessWeek December 1, 2011