One of the great things about Google's Android OS is that with its open platform, hardware manufacturers can slap it on any device they darn well please. They can modify it to suit their needs and skin it to their heart's content.
But this is also one of the rotten things about Android. If pushed too far, the OS might still boast top-level functionality, but can often lose much of the stability and flexibility it had when Google let it out of the gate. If you cram Android into a device it's not meant for--a tablet computer, for example--plenty of important features, such as the ability to use third-party applications available in Android Market, will simply refuse to work.
