Non-Fiction - In need of more diversity and depth? - posted last month

Agreed here too.

Here's a couple of suggestions:

Free as in Freedom: http://oreilly.com/openbook/freedom/
Age of Reason - Thomas Paine
Free for All - Peter Wayner
Hacker Crackdown - Bruce Sterling

Ideas - A listing of recently added titles - posted last year

Indeed would be good to have. Looking forward to it.

Book Requests - Free as in Freedom - by Richard Stallman - posted last year

Author: Richard Stallman
Title: Free as in Freedom
URL: http://www.oreilly.com/openbook/freedom/
License: GNU Free Documention license

Copied review: Free as in Freedom interweaves biographical snapshots of GNU project founder Richard Stallman with the political, social and economic history of the free software movement. It examines Stallman's unique personality and how that personality has been at turns a driving force and a drawback in terms of the movement's overall success.

From the license: The purpose of this License is to make a manual, textbook, or other written document "free" in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it, with or without modifying it, either commercially or noncommercially. Secondarily, this License preserves for the author and publisher a way to get credit for their work, while not being considered responsible for modifications made by others.

Book Requests - Agent to the Stars - posted last year

Agent to the Stars by John Scalzi is available free on his website:

http://www.scalzi.com/agent/

Would be great to add it to DailyLit, but he hasn't mentioned the licensing other than saying he is giving it for free.