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Birdy, +1 for the information and kindness, incase I didn't do it right.

Thank you very much :3

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Oh and is it me but the dodgy looking/sounding advertisments on this forum make me feel a bit (more) nervous. Or am i just being over sensitive?!

You are right, most of them are good examples of places where you shouldn't spend your Bitcoins or are gambling at best.

Quote from: DannyHamilton on November 21, 2013, 12:38:19 PM

Quote from: Birdy on November 19, 2013, 05:45:54 PM

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4. Am I correct that the tiny series of numbers/letters etc beneath my BTC address is the key?

Probably, Bitcoin addresses always start with "1", private keys always start with "5", "L", or "K".

Fixed that for you.

Thanks ^^

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I'm just wondering why all of your concerns are more of technical nature. Maybe you have asked about this stuff elswhere, but I have spent quite a bit of brainpower considering topics like "Can the blockchains ever get so long BC becomes unuseable" or "Are there too many speculators involved".

Yes, there are plenty of things you have to ask yourself to get an idea if Bitcoin could be viable.
The size of the blockchain is an issue that was discussed a lot and there are possible solutions like pruning/compressing to reduce the size.
The number of speculators contributes to volatility, but this should diminish when Bitcoin reaches higher market caps.