One way you can consider is having a QR code on the pdf pages, linking back to a website for the book, and there will be another QR code there for the donation.
I forgot about the QR code; I'll look into fixing one of those into it. That way someone won't have to type the whole code in. But someone could potentially change the QR code to lead to yet another website There's no escaping it! I could try a vanity address, to make it more obvious that it was going to me...hrmm. There's also a website that hosts e-books, and I'm pretty sure they have a "pay what you want" type thing, but it's slightly different than what I'm looking for, as I would prefer people to pay only after they saw it was a decent novel. The "pay what you want" still assumes the reader doesn't know what they're getting into, and it's a total gamble. That is, I could include some examples of the work, perhaps the first few chapters, but I'm not so sure...
Good point, and I too am against such measures. That's the curse of anti-DRM, I suppose--or the blessing. I'll just have to trust that nobody would sink so low. I'll go ahead and release it once it's ready, to you guys and to wherever else, and if it does get modified at some point in time, I'll figure it out from there.