That's up for debate! http://grammarist.com/spelling/flack-flak/ http://grammarist.com/spelling/flack-flak/ http://www.prnewsonline.com/prnewsblog/flackflak-w

That's up for debate! http://grammarist.com/spelling/flack-flak/ http://grammarist.com/spelling/flack-flak/ http://www.prnewsonline.com/prnewsblog/flackflak-which-do-you-prefer/ http://www.prnewsonline.com/prnewsblog/flackflak-which-do-yo...