THE debate over Wikipedia has hit a fever pitch in recent weeks. Supporters of Wikipedia, the user-edited online encyclopedia, are pitted against traditionalists who call the site inaccurate and irresponsible. The latest salvo came this week thanks to Rogers Cadenhead, who did a bit of cybersleuthing and reported on Workbench that the founder of Wikipedia, Jimmy Wales, had altered his own Wikipedia biography. Wired News picked up Mr. Cadenhead's discovery, and a heated debate ensued on Wikipedia discussion boards. According to Mr. Cadenhead's interpretation, Mr. Wales made the changes to play down the role of his former editor, Larry Sanger,...