Here's an extensive takedown of the paper; it has lots of flaws: http://blog.someben.com/2011/05/sour-grapes-seven-reasons-why-that-twitter-prediction-model-is-

Here's an extensive takedown of the paper; it has lots of flaws: http://blog.someben.com/2011/05/sour-grapes-seven-reasons-why-that-twitter-prediction-model-is-cooked/ http://blog.someben.com/2011/05/sour-grapes-seven-reasons-wh...