How Hashtagging the Web Could Improve Our Collective Intelligence

I have been doing #hashtag sentiment tracking on the http://moodpanda.com data so when the user posts I Love #coke or #coke is sick it is attached to there chosen mood number (1-10) that way i can get a exact rating of how people feels about the product or brand etc. over time, its quite cool to see the results.

It is this form of direct Sentiment analysis and does not fall foul of the normal issues with Sentiment analysis e.g. is the word sick good or bad? Different ways of phrasing etc. are not an issue from http://moodpanda.com data.