NORAD’s Christmas Eve Santa tracking has embraced Web 2.0. The linked article explains its history, starting in 1955 with a typo that accidentally directed callers to a top-secret phone, to the present day where the Santa tracker is on gmail, YouTube, Twitter, Facebook, and others. The big event, however, is the real-time NORAD radar/satellite tracking on Christmas Eve. Military fighter jets meet up with Santa when he enters North American airspace and escort him as he goes about his duties. It turns out that Rudolph’s nose is bright enough to give off a heat signature detectable by NORAD’s satellites.