Sometimes when you get "punched" should you just take it and not punch back? That could be what Burson-Marteller executives are thinking after their feud with MSNBC's Rachel Maddow continued this week.

After a Burson leaked memo ended up in PRWeek, claiming innacuracies in Maddow's reporting, the host felt a need to respond. The debate centered around Burson's work for security contractor Blackwater, mostly known for their controversial work in Iraq.

CEO Mark Penn claimed in the memo that the firm "never took a dime" from Blackwater, however past reports dispute the statment.

Said Maddow, "Is it possible that Burson-Marsteller could have worked for Blackwater but not been paid for it... Blackwater is their charity case? ...I welcome any further opportunity to clear up the record."