None of them. I don't think mining with GPU will be profitable after ASICs will be ready (next months)...

Big thanks to you both for the help!  A few more pieces of the puzzle in better understanding BTC.

Just to be clear DannyHamilton, the keys I would need to write down to create the "paper wallet" are the ones shown in the "Receive Coins" tab of the client corresponding with the Bitcoins I receive correct?  In other words, the addresses I create in the client and give to VirtEx in exchange for my purchased Bitcoins?

Thanks again guys, much appreciated!

"Some A few morons criticize have incorrectly accused Bitcoin for of being a Ponzi scheme because they don't know the definition of "Ponzi scheme" and/or lack even a rudimentary grasp of Bitcoin's basic principles..."

That seems like a reasonable compromise, no?

Sono a Roma a novembre dal 19 al 21 e a Firenze dal 22 al 25.

Mi piacerebbe incontrare chiunque voglia parlare di Bitcoin per un caffe o un drink.

Mandatemi un'email: Charlie@bitinstant.com. Grazie e a presto!

Charlie

Right now Venice is having its 6th bigger flood in its history

Freedom, Static IP Address and real support people come at a price. 

David Kinley considers the theory of Aristotle to be flawed because the philosopher probably lacked sufficient understanding of the ways and practices of primitive communities, and so may have formed his opinion from personal experience and conjecture.

In his book Debt: The First 5000 Years, anthropologist David Graeber refutes the suggestion that money was invented to replace barter. The problem with this version of history, he suggests, is the lack of any supporting evidence. His research indicates that 'gift economies' were common, at least the beginnings of the first agrarian societies, when humans used elaborate credit systems. Graeber proposes that money as a unit of account was invented the moment when the unquantifiable obligation "I owe you one" transformed into the quantifiable notion of "I owe you one unit of something". In this view, money emerged first as credit and only later aquired the functions of a medium of exchange and a store of value.[7][8]

Contrary to the popular opinion, there is no evidence of a society or economy that relied primarily on barter.[9] Instead, non-monetary societies operated largely along the principles of gift giving to form productive reciprocal obligations[9] and debt.[10][11] According to Graeber, when barter did occur, it was usually with strangers or to mitigate potential robbery by enemies.[12] Both parties have to agree to sell and buy each other commodities. this is known as double coincidence of wants. what a person desires to sell is exactly what the other wishes to buy. In a barter system where goods are directly exchanged without the use of money,double coincidence of wants is an essential feature.

it's a established fact that many aboriginal cultures did barter

Contrary to the popular opinion, there is no evidence of a society or economy that relied primarily on barter.[9]

mining is the only payment option

I'm still looking forward to when a bunch of Bitcoin miners get together and direct ~50GH/s into Wurm and take control of the economy on a server