Author Neil Gaiman and his publisher have reported that giving away eBooks of his novel American Gods earlier this year ended up selling more books for him in the long run. Ask Radiohead — it turns out that giving people free things actually ends up being amazing promotion!
I've been tempted to buy the Kindle plenty of times, and now that I have the eReader app on my iPhone, I'm looking forward to purchasing and reading eBooks, something I don't do very often. I won't turn my back on "real" books, I just like the option of having another vehicle to get my reading in on. What about you? Like digital music, have you started buying digital books?