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coolcrook - Well you would be surprised there are something called litecoins too. Current rates at $2.396 a coin. Leave alone TE, there are not even ET articles talking about it. So it all comes down to the latest and greatest fad when it is about discussions. BTC has it roots on Silk Road. If their rivals Atlantis, who are pushing litecoins, succeed, we might see a thread called litecoins next year.
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blkrb0t - I think the point @
6pack was making was it is much easier to hack than it is to rob a bank. As for credit cards, you can get your money back , in bitcoins you can forget it when it is gone from your purse. And considering how easy (relative to robbing a bank) hack a computer using the 0-day attacks, bitcoins hacking pose a far greater risk.
All aside, bitcoins are just too volatile to be used in business, thats why it is not gaining many mainstream acceptance. As for websites which actually accept it, they have a payment provider (like Silk Road's escrow) which gives them a fixed exchange rate to do business with. So you wont see many shops changing their BTC demand day in, day out based on the fluctuating exchange rates.
Then there is a risk of US action. While we all like to believe US actions shouldn't matter, they remain the biggest threat as seen in case of Liberty Reserve. It was there one day and gone the other. All the money in LR was lost in one shot. So if ever US decides to brand bitcoins as a way of laundering money, its value will drop like a stone.
BTW, for anyone who doesn't know - Silk Road and Atlantis are the two biggest online drug selling sites - (ebay style).