What the hell is complicated about 0.001 BTC = 1 mBTC and 0.001 mBTC = 1 uBTC?
I refuse to believe that anyone would be too stupid to get this, even most Americans. Its damn simple.
technically to talk about bitcoins completely you need to use nano. The issue with nano is it starts at 10^-9 so you have 10 nanobitcoins, but not 1nanobitcoin.
(bitcoins only go upto 10^-8)
Well, we all could just agree that when it comes to BTC, 'nano' means 10 ^ -8, instead of the usual 10 ^ -9. But that may be a bad idea.