Kindlerotica
The strange but inevitable rise of e-reader pornography.
By James Ledbetter,  Sept. 29, 2010.

As I write this, the most downloaded item for Amazon's Kindle is a novel by Jenna Bayley-Burke called Compromising Positions. Here is part of the plot description: "David Strong knows how to do a lot of things—run an international fitness company, finesse stock portfolios and stay out of emotional entanglements. That is, until he gets tangled up with Sophie Delfino and her Sensational Sex workout. He's supposed to help her demonstrate Kama Sutra positions for her couples-yoga class. … And his co-instructor unexpectedly tests his control to the limit." If that nudge and wink aren't clear enough, this is attached: "Warning: This is one exercise program you won't need to consult your doctor before beginning—unless he's hot and available for house calls. The Kama Sutra isn't for the prudish or faint of heart, and neither is this story."

More - http://www.slate.com/id/2269132/