I thought genuine Macs have a special chip on the motherboard which OS X checks for?
If so, how does OS X start on these boxes?
If you're talking about Apple ROMs, didn't they go away something like 10 years ago?
This OpenMac is an interesting idea, especially since I've been wanting a small, quiet, headless Mac for the longest time.
However, I don't care how you try to disguise a big, ugly box, it's still a big, ugly box. Guessing it's also fairly loud, since I can't imagine they're using quality fans at that low price point.
So I'd want to replace my much smaller but almost as ugly (and LOUD) PC for that thing? Right... The mac Mini is well worth the cost when you figure the much smaller form factor, much quieter operation, and aesthetics.
As much as I want a headless Mac, this isn't it.
My iBook is getting a bit long in the tooth, so I hope something else comes up soon. Otherwise, I'll have to pick up a Mini to hold me over a while longer.