Harper Collins are doing free eBook give-aways for EOS's tenth anniversary.
You do need to create an account with them using an email address, but you don't need to enter any payment details. You add the book to your cart and then enter the discount code, which reduces the cost to zero. You do get subscribed to their newsletter automatically.
Usual DRMed formats. PDF, LIT, Mobipocket.
Since they recently also did an offer for the new Raymond E. Feist, I can only assume that they're doing a new book every so often.
http://www.harpercollinsebooks.com/8...EOSPRMO_050508
or follow the EOS 10 "Download a Free E-Book" link from their front page
http://www.harpercollinsebooks.com/
Paul