I don't think that the hubber's domain that shows actually themselves visit your hub so often. I think they probably have written a hub which closely links to yours and they have either linked your hub from it (Maybe take a look at their hubs yourself and see if you can find a link to your hub in there) or your hub appears as a link automatically generated along the right in the "related hubs" section of one of their hubs that again has a similar content to one of yours.
I'm not an expert, and may be wrong, but I think it's that that person may have written about a topic close to what your hub is about. When people read that person's hub, they probably click on the right side of the page (where related hubs are listed), on a link to your hub. Or, that person may have listed your hub as a related hub, with a link, at the bottom of the hub.
Again, I'm not positive, but that's what I've gathered from looking into. =Hope this helps a bit!
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.