ITunes doesn't release it's download figures. I've been host/co-host on 2 podcasts series and found the numbers a bit of a mystery. For my first podcast, Theatrically Speaking, I used Lybsn.In my control panel they listed my downloads from the source (iTunes, podcast ally).
However, there were always a fair number of downloads/plays that they couldn't trace, so I never really believed them. As a co-host on Television Zombies for a year we kept having the same what-are-the-numbers conversations. We could tell if there was a spike or a drop off but the hard numbers were a mystery.
You might look at ask.metafilter.com/34798/Top-Podcast-Dow... or mashable.com/2008/02/04/podcasting-reven....
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.