Here's the problem with non-commercial software, kids. I don't want to implement what everyone is asking for--PDF support in Books.app. PDF is a horrible format for eBooks--there's no way to reflow the text, since you're basically looking at a picture. I don't want that reading experience for myself. But a lot of people do.
So? What to do about it?
I'm thinking about a tip jar, with a certain amount of money required for me to begin work on PDF support. If I'm gonna do something I don't want to do, I better get paid for it. That seems fair, doesn't it? What do you think?
The number of people using Books.app is pretty impressive. And if someone doesn't want to pay me, maybe they'll be motivated to code it themselves.