The Emoto visualization [emoto2012.org] by the illustrious Moritz Stefaner, FutureEverything, and Studio NAND tracks twitter for themes related to the Games, analyzes the messages for content and emotional expressions, and visualizes topics and tone of the conversation. You can find out which topics are most discussed, or see all current messages related to the Games.
Emoto uses an origami looking glyph to represent the emotive summarization for each topic. The glyphs reshape and rearrange themselves based on realtime status. You can also view an overview of each day.
After the games, a set of data sculptures will be made to capture the collective emotion of the 2012 Olympics.