It started life as a tweet from the Flynn Lives movement, with the link http://xdqlrpgmqivgca9tfjcqddnbxt.com/. When you went there, you were faced with a set of puzzles to solve, and according to Coming Soon the folks over at the Unfiction message boards/forum solved them in record time. The results were yet another URL, this time to TRON Night 2010, a site that will let you register to see 20 minutes of TRON Legacy on October 28th for free. Registration opens on Tuesday the 12th at 1PM EST, and there is a link that allows you to see if it will be in your area. It is only granular down to the state level at the moment, but it will also only be at IMAX 3D theaters, so that should give you a rough idea of where it will be relative to you. There can never be too much TRON!