Making money on Android

Develop has an interesting article up titled What's the best way to make money from Android Games?  It definitely has some good points especially about freemium games, but the best info is that it can be pretty difficult to develop for Android because of all the different handsets and firmware combinations that are possible.  If you add to that the fact that the Android emulators are notoriously slow so that testing games is nearly impossible, then you definitely have one king-size headache brewing.  I guess I will just have to see for myself.