Members of the Codex Writer's workshop will be giving away free ebooks on Amazon Sept 26-27 (not free at time of posting, Sept 25).
This includes works Nebula Award nominee by Ruth Nestvold, Hugo, Nebula, Campbell nominee and WOTF Winner Aliette de Bodard, and other upcoming writers
http://www.amazon.com/lm/R1X0R7DKX7XYXI
A fuller description of titles is available on Aliette de Bodard's livejournal at:
http://aliettedb.livejournal.com/450600.html