Awesome job! A few things immediately jumped out at me: 1. On an average, Fox, seems to be more positive than CNN. Hmm. 2. The headlines were more positive t

Awesome job! A few things immediately jumped out at me: 1. On an average, Fox, seems to be more positive than CNN. Hmm. 2. The headlines were more positive than most {sources/days} on CNN Politics in the second half of 2009. Obama's election is the only story I can think of that could have affected all the sources, but I may be wrong. 3. Around the same time, (shortly after the election results, in fact) HuffPost saw a sharp decline in the positivity of their headlines and dipped into negative. Hmm... 4. The overall trend of headlines is more positive than negative, leading me to wonder why is it that, as a people, we are so cynical. I'd love to see a graph that plots the median instead of the average of the daily scores. Also, I dunno much about the Alchemy scoring, but quite a few of the headlines (~30-50% per day) seem to have scored 0.0 - is that bad detection or consistently neutral reporting? If so, I suspect the median graph will look a lot different. I'd also love to see a similar analysis for non-mainstream media - especially, aggregators like reddit, HN and slashdot. Maybe, you could add the post ranking/comments/karma as other variables and attempt to refine the analysis further? Just bouncing a few ideas, that all. All in all, good job. :)