A Chicago professor claims that he's the mysterious author who spawned a Twitter sensation with his profanity-laced parody of Chicago mayor-elect Rahm Emanuel.
The Atlantic magazine reported Monday the man behind the feed is Columbia College journalism professor Dan Sinker.
The obscenity-laced comments on the fake feed during the mayoral race were so popular they attracted 39,000 followers _ more than the real Emanuel has on his Twitter profile.
After the election, the tweeter joked that he'd entered a time vortex and signed off.
During the campaign, Emanuel pledged to donate up to $5,000 to the charity of the mystery tweeter's choice if he or she agreed to come forward. Emanuel spokesman Ben LaBolt says now that the cat is out of the bag, Emanuel will keep his promise.