Yes, 'smart' contracts are great until they actually have to interact with the real world, and suddenly they lose their automatic, unstoppable, trustless features.

So far it seems that the only true reliable ethereum use cases have been ponzi schemes and dice games, because these can be implemented completely in the system.

Ethereum's much-promoted gambling app, 'Augur', gets very messy when it comes to settling market winners. I wonder how they will cope with fixing wrongly-settled events, and who will foot the bill?