CrunchGear is reporting that by rooting the NookColor you can install the Kindle reading application on the device.
To root the device you need one of theAutorooter images andWin32ImageWriter for Windows or Mac OS/Linux tools to write the image to an MicroSD card. Then you upload the Kindle app from the Android store and rock out. This process also adds GMail, YouTube, and a number of other standard Android goodies to your previously stripped-down NookColor.
The whole process is right here and it should be a fine ride.