Facebook has been working on a number of side projects over the past couple years which involve measuring the sentiment of users on the site The company’s latest project, first announced yesterday afternoon, is the United States Gross National Happiness index.

The newly launched tool polls userFacebook has been working on a number of side projects over the past couple years which involve measuring the sentiment of users on the site The company’s latest project, first announced yesterday afternoon, is the United States Gross National Happiness index.

The newly launched More»