Incidentally, I'm going to drop out of this discussion soon -- I'm at worldcon, and I can't spend all my time in front of a hot keyboard
As for darknet copies, and use thereof: my publishers officially disapprove, but my personal opinion is: if you don't like the DRM'd copies of my books that they publish, I have no problem whatsoever with readers downloading a darknet copy if they also buy a paperback -- either file it or give it to a friend or something, I don't care, as long as one way or the other they've paid for it. My take on
that kind of use is that it's equivalent to buying a CD and ripping it to your iPod; it's functionally equivalent to format shifting, and there's a whole body of case law to the effect that format shifting is legal.
Ideally I'd like to see publishers print some sort of one-time download code in the back of my books so that purchasers can download an e-copy, but the chances of getting them to start doing that any time this century are slim ...