Amazon has just announced that you can give anyone with an email address a Kindle book. If the person does not own a Kindle, all that he or she has to do is download the free Kindle "app" for a laptop or other device.
What does this mean practically? Say I want to give the new $18 George W. Bush biography to someone. Well, the Kindle price is $9.99. I rest my case. In addition, as with all Kindle purchases, there is no shipping cost; and delivery is virtually instantaneous. Life just got simpler.
See this Amazon link for details.