Google has added a feature to the Android Market that lets developers specify which handsets their application will work with best. The tool should help prevent customers from downloading apps that aren't supported by their handsets.
This is a good idea. I get alot of Customers complain about an app not working on their device or there is an app on their device that causes the device to not work well. and when you try to explain why to them, they feel that if it can be downloaded to their devioce they should be able to use it.