Aga Bakrie

When Nat Rothschild, the co-founder of troubled miner ARMS, insulted his former investment partner on Twitter last week, he showed the power of social media for business leaders seeking publicity - but also the perils of saying the wrong thing.

When Nat Rothschild, the co-founder of troubled miner ARMS, insulted his former investment partner on Twitter last week, he showed the power of social media for business leaders seeking publicity - but also the perils of saying the wrong thing.