Right now bitcoins can be divided into smaller denominations. The smallest being 0.00000001 as everyone says. This is controlled by or coded or whatever in to the blockchain. If whoever seems to govern bitcoin, (Gavin or whoever), wants to allow bitcoins to be divided into smaller denominations, example; 0.0000000000000001 or 0.0000000000000000000000000000000000000000001 can this be done?

Can we modify the software/bitcoin blockchain to allow for division and smaller denominations than a Satoshi if we decide to in the future?

Hi guys.

I am obviously very new!

I am wanting to buy 1 Bitcoin. I am in Australia and want to use a bank debt card MasterCard from a very large bank.
Every site I have been on is adding on $20 to $30 'transaction fees' or whatever the wish to call it.

Where is the best place to buy them with a credit/debt card from Australia?

I understand that these sites/companies are going to charge maybe a little but (this is going to sound very noob) from what I have learnt one of the fundamental reasons for revolution of the technology is that there is little no fees. (I have been at this 24hr)

Any help would be greatly appreciated!