emoto is a very cool project by Moritz Stefaner and others that measures the mood of the Olympics:
The emoto project captures and visualises the excitement around the Olympic Games in London 2012. We track twitter for themes related to the Games, analyse the messages for content and emotional expressions, and visualise topics and tone of the conversation.
It will be interesting to see the shifts in mood here over the next two weeks and even more interesting to see an annotated graph of the mood swings when it’s all done.
The floating collection of Olympics tweets is mesmerizing.