> I'd be willing to bet that 95% of us are using G4 and G5 Apples, with
> Mac Minis and G5 PowerMacs now becoming the dominant base.

I'm inclined to think that the mobile solutions have become the most dominant by now. The Mac mini has been supported for as long as 8 years, so while it surely was dominant for a while in the past, I see no reason why it should be becoming dominant now.
The MorphOS team could always publish new statistics :-)