Tor is opening up a new website soon. Tor is a book publisher with a lot of great Science Fiction titles. Right now you can sign up for their newsletter which will have free e-book downloads.
“Once you register, you’ll receive our newsletter and a link to download a digital book. And you’ll receive a link to another new book every week.”
This cool program will end once their new site launches, but you get to keep the free e-books. Sounds like a good deal to me, and I’ve never read a book in e-format before.