If you've got an existing Reddit account, you can
enter a contest to win one of two tickets to Friday's gig in Mountain View. All you have to do to win is "Guess the number of Twitter followers @trent_reznor will have at exactly 23:59 Pacific tonight. Entries must be made by 23:00 Pacific" and post your guess in
this thread on Reddit. There are more details on the first link, so go check it out.