Bookmarking never hurts anyone. Infact it is good for you. It means that someone likes your hub and thinks that other will like it too.
Social bookmarking is all about this feeling. You can also bookmark your hubs yourself but it is more effective if someone else bookmarks it. This will make your hub more popular and in turn more traffic.
And it will not hurt if someone uses the exact words in your hub.
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.