Your free book for today is The Word of Mouth Manual, Vol. II and can be found via Seth Godin's blog post, What Dave just did. It's a book about how to guide word of mouth, a concept that is also slightly oxymoronic, isn't it? Very nicely written though. It might sound like it is just for marketeers, but truly, don't us saps who are getting marketed to deserve to know what is going on behind the screens?
And another free book for you, this time it is Lewis Shiner's Black & White, about civil rights, race relations and progress inn Durham North Carolina. You can find it here.
And, to make it 3-fer, a shareware story by the inimitable John Scalzi. Called How I Proposed to My Wife: An Alien Sex Story , it works just like shareware software - you download the story for free and pay what you think it is worth. Even better, half the proceeds go to the Lupus Foundation of America. You can find the post about it here. I downloaded it, but haven't read it yet.