However that can easily be fixed by rooting the device and enabling the Android Market. With Andoid market you can install all kinds of applications, including Kindle, Kobo reader. You would also be able to play Angry Birds and watch Youtube videos. Installing the Kindle application for Android will let you read Amazon Kindle books on your Nook Color device.
It takes less than 5 minutes to execute all rooting instructions from NookDevs.com to root the device, enable Android Market, download Kindle for Android and have WhisperSync open the book I was reading on the same place I left it off on my Kindle device.
Blog Kindle: http://blogkindle.com/2010/12/read-kindle-books-on-nook-color/