London Eye to Be Twitter-Driven 'Mood Ring'

Want to gauge the mood of Brits during the Olympics? Just check out the London Eye. The Ferris wheel will be turned into a huge "mood ring" for 30 minutes each night. The wheel will light up in different colors, depending on the nation's attitude about the day's Games; the hue will be determined by tweets. Yellow will shine for a positive attitude, purple for negative, and green if Brits feel indifferent about what has transpired.

The project began when British utility company EDF Energy contacted a social media analytics expert and linguistics team Sosolimited, staffed by MIT grads, to survey UK-based Twitter sentiments about the Games. A "sentiment algorithm" will turn the words into color, notes Mashable. (More London Eye stories.)