# File lib/twitter/client/friendship.rb, line 19
      def follow(user, options={})
        merge_user_into_options!(user, options)
        # Twitter always turns on notifications if the "follow" option is present, even if it's set to false
        # so only send follow if it's true
        options.merge!(:follow => true) if options.delete(:follow)
        response = post('1/friendships/create', options)
        format.to_s.downcase == 'xml' ? response['user'] : response
      end