Amazon.com has released a free Kindle application for the PC with a promise to release a Mac version soon. For those who aren’t familiar with the Kindle, it started out as an electronic book reader about the same size as a large novel. It has a crisp easy to read black and white display and can download books from Amazon’s Kindle store. The PC version allows you to read books from the Kindle store on your PC and, if you have one, also sync with your Kindle.