Filtering based on sentiment? Oh, they're way ahead of you there: http://money.cnn.com/2014/06/30/technology/social/facebook-experiment/index.html http://money.

Filtering based on sentiment? Oh, they're way ahead of you there: http://money.cnn.com/2014/06/30/technology/social/facebook-experiment/index.html http://money.cnn.com/2014/06/30/technology/social/facebook-e...