But once intercepted traffic is presented as evidence, it is sure to reignite the debate over civil liberties and internet wiretapping.

ECONOMIST: Internet wiretapping

It is the surprise factor - the shock evinced by Mr Dimon - that will reignite the debate about whether regulators need to take more decisive action to curb the complexity of investment banks, to better prevent this kind of accident.

BBC: JPMorgan��s loss may cost all banks

All this will reignite a debate about whether the mania for social-networking sites is inflating another internet bubble.

ECONOMIST: Leaders