Facebook as an Index of Happiness

The New York Times has an article discussing Facebook's recently released Gross National Happiness. Facebook compiled data over two years from people's Facebook statuses and based the analysis on the use of 'happy' and 'sad' words. Christmas reigns supreme, though the days that precede it seem to be the opposite. Other holidays coincide with peaks, too.

Here's a quick snapshot, though if you go on the image source page, you can play around with it and see it more clearly.