I like the idea. A way to search across books in a subject area would be huge. I've found that I look for dev books in two ways: 1. I'm not committed to the l

I like the idea. A way to search across books in a subject area would be huge. I've found that I look for dev books in two ways: 1. I'm not committed to the lib/lang and I want to see what topics merit writing about. 2. I'm building something and happy to shell out a few bucks, but figuring out the quality, depth, or does-it-deal-with-this-specific-thing is tough. This looks like a good start on 1. If you figure out 2, I'll be your biggest fan!