Here are some short videos on why you should think twice before using AbsoluteLayout in your UI implementations. Currently we have the G1 and the G2 panel and in the future there may be others so you'll want your Android base application to follow the best practices that are laid out by the Android creators. So the quick answer is to do the research now so that you can create your application to easily adapt to other panel sizes in the future.
Responsive Design Thinking
To learn more about Responsive Design in Android, check out some of Google's Android Design Advocates as they discuss various elements of Android Design in this episode of Android Design in Action.
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