Comment Depends on the Quality of the Book (Score 2, Interesting) 987
I'll admit, I've downloaded some ebooks in my lifetime. Half of them I don't read, and the ones I find indispensable, I buy because I prefer a hard copy rather than an ebook (also, I don't have to tote something electronic to read them). Admittedly, sometimes I download a book to see if it worth purchasing. I doubt many people will print the ebook and carry it around with them. I don't think coworkers in the software industry would applaud your thriftiness, especially since so many are authors themselves.
So to prevent theft, I would make sure your book is jam-packed with as much relevant information as possible. Make it more reference-like; full of code snippets and tables of commonly used functions, and strategically place this information: eg in the appendixes [that way we don't have to go looking for them].
I think most people that will actually a buy book, but also sometimes download pirated ebooks, will reward you for your efforts if the book was worth it. Take it from me, I have.
So to prevent theft, I would make sure your book is jam-packed with as much relevant information as possible. Make it more reference-like; full of code snippets and tables of commonly used functions, and strategically place this information: eg in the appendixes [that way we don't have to go looking for them].
I think most people that will actually a buy book, but also sometimes download pirated ebooks, will reward you for your efforts if the book was worth it. Take it from me, I have.