The advent of evaluating emotion as data has given rise to opportunities to aggregate social media activity and monetize it.
The New York Times
looks at three services that pull together crowd-sourced sentiment (approval, disapproval, recommendations, etc.) and the implications for the Web.
There are obvious implications for the news business, in determining the value of opinion holders and predicting the patterns of users with content.
ReadWriteWeb
also looks at companies involved in sentiment analysis and suggests it's going to be a hot area for development this year.
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