DeMarco and Lister:

The statistics about reading are particularly discouraging: The average software developer, for example, doesn’t own a single book on the subject of his or her work, and hasn’t ever read one.

Jives with my experience. I’ve only worked with one person in a decade for whom it was clear that he regularly read books about how to do his job well. We read the docs and search the web when the time-pressured task demands it, but we don’t read books. (And I’m as guilty in recent in recent years as anybody.)