Hm..I am no sure but it seems to be a probability thou.
From my understanding it is the ones that tell a bit of information, but leave the reader wanting to know more about products still. Also, I read a hub that travel was good for clicks. Makes me wish I knew more about travel, because I am doing EVERYTHING I can think of to increase my clicks.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.