I bought 3 computer books in the last few month, 2 of them are for dreamweaver and one for flash. I'm not a programmer but a designer trying to expand my abillities. Yes, the books were expensive, but now I have fairly decent dreamweaver skills and it was still way cheaper then taking a class. It's easier for me to follow the tutorials and look up more info on things in a book then online.
I think the market for books is going to still be there, so far I see more and more books being printed and not less.