No, i am not sure they are legit.

Surfing the web I become aware of this service, you can buy up to 2500 $ bitcoin with a credit card.
The obvious question is: how they think to manage the chargeback problem?

thanks for sharing your opinions.

Are you telling me you are running $13k+ hardware? (based on wiki price)

Is that profitable?

Thanks a lot guys, I did not think I could pass 4000 days with no bitcoin mined. Things are worse than I expected.
BTW, me and a couple of my co-workers (we work in the IT) are thinking to invest something in the bitcoin world. I can say we roughly have a budget of $3000 to "gamble"... what do you advice to do? Well the dream would of course buy an ASIC but if I understood well, the only shipping company is the Avalon, and their third batch is only for BTC (and at current prices 75BTC is an absurd price) so there is no open access to ASIC market.
So, what to do? FPGA? GPU?

So, i could spend years making the same calculations another (and much more powerful) miner somewhere in the world has already done? I guess there is no guarantee that my mining software will try to do bitcoin calculations different from any other else in the world... am I wrong?

Hi all,

i've been looking around this bitcoin thing for a while, i also made some experiments in mining about an year ago, but I had not the hardware (i have an Nvidia capable of only 70Mh ) so i gave up.

But my question is this: is the mining a probabilistic thing? May I run a miner and be lucky and find a block in the first 10 minutes, and on the other hand i could also run for a year and obtain nothing?

What does exactly mean the value of "0.25 btc/day" calculated with bitcoin calculator, considering that a block is made of 25btc? Does it mean that, on average, i'll find a block each 100 days, but I can also stay an year without finding one if I am unlucky?

thanks a lot.