The beauty of an open source platform is that it can be modified and expanded to support all sorts of new features. Last week we saw that the G1 could be hacked to accept multi-touch input. This week it is auto-rotation, a feature that the G1 and its accelerometer does not support out of the box. Rather than wait for Google to enable this feature, a developer modified the G1 source code to enable auto-rotation and has released the hack in his G1 Tweak Tools software package. The auto-rotation appears smooth and responsive and works both on the home screen and within applications. Sweet!