It's a failed experiment(not my words).......completely. Review Blockchain and Ethereum. Bitcoin is not safe apparently...and the man that really put the development into bitcoin sold all in the beginning of this year.

http://www.bloomberg.com/news/articles/2016-0...-is-a-bust

https://www.theguardian.com/technology/2016/j...experiment

http://motherboard.vice.com/read/why-ethereum...d-fork-DAO

......

https://www.ethereum.org/

https://www.blockchain.com/