migrators = {
      :posterous => 'Posterous',
      :wordpressdotcom => 'WordpressDotCom',
      :wordpress => 'WordPress',
      :csv => 'CSV',
      :drupal => 'Drupal',
      :enki => 'Enki',
      :mephisto => 'Mephisto',
      :mt => 'MT',
      :textpattern => 'TextPattern',
      :tumblr => 'Tumblr',
      :typo => 'Typo'
    }