Haha, that's a cool subject Uncle Duke. I too wondered how karma was calculated, just being the kinda guy who likes to know how things work, so in a previous post I posted what I infered of how it worked. Nicely enough, NatCh posted pretty detailed explanatation (turns out I wasn't too far off!). There are a ton of useful posts on the board and anytime I do a Google search for some type of eBook info or formatting question, MobileRead isn't too far from the top. That's pretty darn good considering the amount of websites out there and the possibilities.
If you're curious about the method, here's the original post:
https://www.mobileread.com/forums/sho...0091#post60091