[pjc50]

As I keep posting, bitcoin has far stricter requirements than conventional banking for software security. One bug - including operating system zero-days - and your bitcoin can be irreversibly transferred to another address which is hard to trace to a human and even harder to recover.

It's in the same category as rocketry, nuclear reactors or medical software, not "move fast and break things" startups. There is no room for error.

Entertainingly, they've left the FAQ up:

  Q: Are there advantages to bitcoins?

  A: Of course! It is secure, anonymous and it removes the middle man resulting in very little transaction fees.