Maybe you just need to package it differently? I know I've bought Kindle books on similar issues and that there are people who work as consultants doing such things. Not to say that you necessarily want to become a consultant, but you don't even necessarily need to create new content... just stick some of it behind a paywall or in an ebook.
I started writing a reference for long distance motorcycle travel, and that's how I intend to distribute it. I don't expect to make anything from it, but the more linear, prosaic format would fit nicely on a Kindle screen.
The website mentioned above is more of a "visit it when you need it" resource. It's painfully boring to read, as it's written like a plain English instruction manual. It wouldn't be an interesting book.
