We Feel Fine is an incredible display of the power of the web to transform the way we think about humanity. Emotions are among the most human of characteristics, and being able to see their power dynamically is astonishing.
We Feel Fine is a website that analyses blog postings to search for those that contain an indication of the feeling of the poster. It also goes and collects publicly available profile information to establish the location, age, and gender. Via elegant and flexible options, the data is represented as a dynamic display of art, but at the same time it also shows the ebb and flow of emotions in such a detail that it could be useful for more practical applications as well.
There is also an API for We Feel Fine, so if you think you can take advantage of what has already been done, and maybe integrate it in your own blog analytics suite, you can have fun mashing up!