Do you think that it is OK to add links to similar Hubs when leaving a comment on someone else's Hub?

I wouldn't unless I was friends with the person or there is a large ongoing discussion and the link is completely relevant and useful.

As long as it is revelant to the discussion - yes.

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.