Dean ydw i. Dwi'n byw yn Edmonton (Canada), a dwi'n gweithio yn ... Information technology (Google Translate gives "Technoleg Gwybodaeth" as the Welsh term, but I'm unsure how accurate that is.
Anyway, cryptocurrency is a very interesting idea, but I'm not sure it's quite ready for prime time yet. There are a number of problems I see with it:
1) You need to store your currency in a digital "wallet". Sadly, lots of these "wallets" have been found to have serious security flaws in them, an many people have had their bitcoin stashes stolen.
2) Bitcoins aren't hard currency, and therefore aren't as flexible as actual, government-based cash. There are "bitcoin exchanges" available on the Net, where people can buy/sell their bitcoins and other cryptocurrencies. I am extremely distrustful of them. Please read about the "Mt. Gox" debacle here if you are interested: https://en.wikipedia.org/wiki/Mt._Gox
3) Remember (this applies to Bitcoin, but may also apply to other cryptocurrencies): There are only a FINITE number of bitcoins that will ever be available. This is a fundamental part of the design, and we have yet to reach that number (I believe Bitcoin is still quite a way away from reaching its limit). Why does this matter? It all boils down to economics and the concept of money supply. It's actually very interesting how it works, but the fact is that any currency with a finite amount of supply is vulnerable to hoarding. Essentially, people stop spending the currency which effectively make it useless. If you are interested in another read, I'll point you to an article on the "Capitol Hill Babysitting Club": https://en.wikipedia.org/wiki/Capitol_Hill_Babysitting_Co-op
In short, it's REALLY interesting, and it's got an air of "stick it to the Man" about it, but I don't think the current iteration is quite ready to go yet.
Looking forward to some feedback!