Amazon has made it possible for you to read Kindle books without owning a Kindle. Amazon has apps for the iPhone, Windows, the Mac, Blackberry, IPad, Android and Windows 7 mobile. You can find them at this link.
You can also use the Kindle Cloud Reader to read them on your computer or device. If you were skipping over the free ebooks that were posted here because you didn't have a Kindle. You don't have to do it anymore.
The Kindle PC app can be found at this link.