I got Starfish (peter watts) from Amazon when it was a free (TOR?) download. I was so impressed with it I went to Watts' site to learn about more of his books and lo and behold the ENTIRE 4 book series is available under a creative commons license for free! Amazing! Use the links at the top of each page to download the prc or pdb or pdf or zipped html.
Am almost done with Starfish - its a terrific read - but gritty stuff for sure.