Techcrunch article: A Bitcoin Battle Is Brewing

http://techcrunch.com/2014/12/06/a-bitcoin-battle-is-brewing/

Please see: Hill, Austin, "Bitcoin: Is Cryptocurrency Viable?" (2014). CMC Senior Theses. Paper 902.
http://scholarship.claremont.edu/cgi/viewcontent.cgi?article=1848&context=cmc_theses

47 people in the world own 28.9% of Bitcoins.
880 people in the world own 21.5% of Bitcoins.
10,000 (ten thousand) people in the world own 24.8% of Bitcoins.
1 million people worldwide have 20.7% of Bitcoins.
the rest is considered lost.

http://onlinedatingsoundbarrier.blogspot.com.ar/2014/06/article-at-la-nacion-argentinean.html
Bitcoin seems like a big Ponzi scheme.
Bitcoin or other cryptocurrencies: at the same level to acquire shares of a company on the Stock Exchange, or bonds of an African country or disreputable unit shares in a mutual high risk fund.
The mining of Bitcoins seem to be a fraud, like taking a hammer and smash with that hammer 1m2 (square meter) of your home to collect a compensation, but that will not be enough to repair the damage.