Loughborough University has created software that tracks 2000 tweets per second, to assess the public mood.

The spin on it claims it could help Police predict crimes:

Aaudio of BBC news item:

Download EMOTIVE SOFTWARE ALERT.mp3 from Sendspace.com - send big files the easy way

Daily Mail reprt:

http://www.dailymail.co.uk/news/arti...ts-second.html

New Scientist report of something by the same name covering voicemail from earlier:

http://www.newscientist.com/article/...-emotions.html