Via Cosma in comments at the other place I hang out, this is a very nice teaching tool for the sole and single purpose of getting this point across to students. NB that you need to be logged into a Google ID to use it. My favorite so far is the .8222 correlation between my random graph and searches for “frogsex” (the mind squirbles).

Henry Farrell is associate professor of political science and international affairs at the George Washington University. He blogs at Crooked Timber and The Monkey Cage.