Interesting article about fractional reserves and audits in the wake of the Mt Gox demise:

http://www.coindesk.com/prove-exchanges-really-money/

Firstly, I was surprised to learn that not all exchange transactions are blockchain transparent.

Secondly, as I read it, and particularly at the bit about decentralized audits, I couldn't help thinking about Ethereum as a potential solution.

Thoughts?