Scoble is missing one important thing: there is absolutely NO way of finding out which apps are designed to work on Android Tablets, and which are built only for phones and will just (crappy) scale up.
Apps on market.android.com show a tab permissions where you can find what your device needs to use the app. I agree it's very hard to find out the supported resolutions. The screenshots will tell sometimes. But for a free app I don't think it's a problem at all. Don't like it: delete it.