This is a temporary measure (August 17th). At some point of time the old link for free kindle books ought to start working.

Free Kindle Book Offers

You can check out all the offers at Amazon itself, or peruse the list below -
  1. Legacy - Kindle Exclusive. Free till Sept 4th.
  2. Perdido Street Station by China Mieville. NEW!
  3. Full Moon Rising by Riley Jensen is free. NEW!
  4. I Heart Bloomberg by Melody Carlson is available for free. NEW!
  5. $1Devices & Desires. NEW!
  6. Shopping for Time: How to Do It All and Not Be Overwhelmed by Carolyn Mahaney. NEW!
  7. Supposed to end Aug 19th, ongoing as of Aug 22nd:
  8. His Majestyís Dragon by Naomi Novik.
  9. Assassinís Apprentice by Robin Hobbs.
  10. Blood Engines by T. A. Pratt.
  11. Red Mars by Kim Stanley Robinson. First part of the Blind Geometer Trilogy.
  12. Return Engagement by Harry TurtleDove - From the Settling Accounts Series.
  13. God Ain't Blind by Mary Monroe. NEW!
  14. Hostile Intent by Michael Walsh. NEW!
  15. Raising Jake by Charlie Carillo. NEW!
  16. Brass Bed by Jennifer Stevenson.
  17. The Briar King by Greg Keyes
  18. Queen of the Orcs: Kingís Property
  19. Ongoing: Lessons in Love by Kate Davies (Romance).
  20. Perhaps: Buy Brian Haig's Secret Sanction and receive a free download of Mortal Allies.

Free Sci-Fi Books and Thrillers
  1. Ongoing: Eye of the Storm CD - 23 Free John Ringo Sci Fi Books
  2. Manifold Time by Stephen Baxter
  3. Magic Kingdom for Sale-Sold! by Terry Pratchett.
  4. Elric: The Stealer of Souls by Michael Moorcock.
  5. For Love of Mother Not by Alan Dean Foster.
  6. James Patterson's The Angel Experiment is free until end 2009.
  7. Paranoia by Josph Finder is free in the Kindle Store (mentioned earlier) - from kindle forums it turns out you can also get it for free as an audio-book at iTunes.
  8. Serial by Jack Kilborn and Blake Crouch.
  9. 4 Free Kindle Science Fiction books from Peter Watts (pick MobiPocket File format). These were all published by Tor originally and the scoop is courtesy official kindle forums -

Free Romance Novels

  1. The Sari Shop Widow by Shobhan Bantwal. NEW!
  2. Yorkshire: Richard and Rose (Book 1) by Lynne Connolly.
  3. Dark Fever by Karen Marie Moning.
  4. Kiss of Midnight by Lara Adrian.
  5. Ongoing (Perhaps):(A few users found this) Buy Smash Cut by Sandra Brown, get her Hello, Darkness for free. Your Mileage May Vary.
  6. Brass Bed by Jennifer Stevenson.
  7. His Lady Mistress by Elizabeth Rolls.
  8. Slow Hands by Leslie Kelly.
  9. A Very Special Delivery by Linda Goodnight.
  10. Crime Scene at Cardwell Ranch by B.J. Daniels.
  11. Speed Dating by Nancy Waren.
  12. Kiss Me Deadly by Michele Hauf.
  13. Homespun Bride by Jillian Hart.
  14. Stranded with a Spy by Merline Lovelace.
  15. My Soul to Lose by Rachel Vincent.
  16. The Bride's Baby by Liz Fielding.
  17. Snowbound by Janice Kay Johnson.
  18. Baby Bonanza by Maureen Child.
  19. Hide in Plain Sight by Marta Perry.
  20. Once a Cowboy by Linda Warren.
  21. Dancing in the Moonlight by RaeAnn Thayne.
  22. Irresistible Forces by Brenda Jackson.
  23. Wild's Call by Jeri Smith-Ready.
  24. Price of Passion by Susan Napier

Simon & Schuster PDF Free Books:
  1. Ongoing: Thomas Greanis' Raising Atlantis is free in PDF format to promote his new book Atlantis Revelation.
  2. Scott Westerfeld's Uglies. It's a free offer from Simon and Schuster to promote the soon to be released Leviathan.

Religious Books:
  1. Dark Blue by Melody Carlson is free as of August 19th, 2009.
  2. 200 Pomegranates and an Audience of One is now Free.
  3. Suffering and Sovereignty of God.