Free as in Books?
donkeyDevil writes "Forget free software, contribute to free books! The Chronicle has an interesting story about bookcrossing.com's effort to track feral books through their captors. Read about it, then do it.
(Although the focus of the story is on Bay Arean book releasors, it looks like you'd have a better chance of snagging a free book here.)"
... has been going on for a long time making out-of-copyright works available to the public.
Here you have it: Project Guttenberg
The most popular subjects there are "Science, Math and Computing" with 289 titles. There are quite a few other subjects covered there too.
The Assayer is more than just a list of books though - it has reader-contributed reviews. For example, here is the entry for DocBook: The Definitive Guide by Norman Walsh (available at www.docbook.org). There is a review at the bottom of the entry page.
I'm writing a Free book, although it is at a very early draft stage. The ZooLib Cookbook is a tutorial for the ZooLib cross-platform application framework.
I'm also slowly creating a copylefted collection of articles on software quality at the Linux Quality Database.
-- Could you use my software consulting serv