[gershwin]

I discover books through three sources:

1) New releases from publishers/editors/authors I like. If you like 3 books from one publisher, you're probably more likely to like another book from that publisher despite its topic. Same for editors. And, for authors although author releases are less frequent than editors which are less frequent than publishers.

2) Colleagues and friends. Word of mouth still seems to be the number one way people discover books. Ask your friends what they are currently reading. Hop over to GoodReads.com and see if you can find a network that reads genres similar to what you like.

3) Blogs/forums. We like to talk about what we're reading since that makes an otherwise rather solo activity more social. Search the personal/academic/company blogs for topics you like.

Finally, why not create a hacker news thread called "What are you currently reading?" :)