twitpocalypse is at hand!!
Friday, 12th June 2009

The Twitpocalypse is similar to the Y2K bug. Very soon the unique identifier associated to each tweet will exceed 2,147,483,6471
For some of your favorite third-party Twitter services not designed to handle such a case, the sequence will suddenly turn into negative numbers. At this point, they are very likely to malfunction or crash.
http://www.twitpocalypse.com/



