Just in case there's anyone out there who'd be interested but hasn't heard: Hugo-winning author Tim Pratt is serializing his previously unpublished science fantasy novel The Nex for free online.
You can start with chapter 1, and read new chapters as they're posted, a week at a time. (He's posted the first five chapters so far, out of eighteen total.)
Or if you don't want to wait to read the whole thing, you can buy the Kindle edition for $5.
If you like it, consider sending Tim a donation; see the right-hand sidebar of the main page for info on how to donate and on the prizes you can get for donating.
(I haven't read the book yet, but am looking forward to it. Had been waiting to post about it 'til I got a chance to read it, but with the haphazard way my fiction reading has been proceeding lately, that might be a while yet, so I figured it was time to go ahead and post.)