Will adding DRM-free books to the Kindle store entice Amazon outsiders to start shopping there?

But there's always a catch.

Amazon has just added a DRM-free option to Kindle ebooks, letting you read them anywhere. But publishers need to opt in first ...

Play Game takes place on Jan. 21-24. Stuff Your Kindle Days often take place over 24 hours, this event runs for four days.

"Stuff Your Kindle Day" happens several times a year when Amazon lists thousands of Kindle books for free.

Amazon has been releasing e-readers since 2007, well before there were any Android tablets with Google Play or the Apple App ...