* Electronic Books
* Electronic Book Readers
Editor's note: Amy Gahran writes about mobile tech for CNN.com. She is a San Francisco Bay Area writer and media consultant whose blog, Contentious.com, explores how people communicate in the online age.
(CNN) -- E-books are revolutionizing the publishing industry and reader preferences, and Amazon might be in a unique position to hasten that change -- if they decide to start giving away their popular Kindle e-reader for free.
Here's why they might want to do that.
Last year, nearly $1 billion in e-books were sold, according to Forrester. By 2015, this is expected to jump to $3 billion. That's an awful lot of money to be made selling e-books.
At that point, selling e-readers at any price might just become an obstacle to selling more e-books. So why not just give away some e-readers for free?
Back in October 2009, blogger John Walkenbach noticed that the Kindle price -- currently $139 -- was falling steadily. By June 2010 this rate was so consistent that he projected that by November 2011 the Kindle price should be $0. Last summer, author Kevin Kelly asked Amazon CEO Jeff Bezos about this projection.