The difference now, he says, is that the internet can magnify the effect of such endorsements.

ECONOMIST: Marketing: Building buzz | The

Ill-designed pension systems magnify the effect of population ageing by creating incentives for people to retire ever earlier.

ECONOMIST: Time to grow up | The

It's a very sophisticated, coordinated campaign to hit a series of targets in a specific order, in specific places, designed to greatly magnify the effect this bombing campaign would have, as opposed to a more indiscriminate campaign.

CNN: Jamie McIntyre on the A-Day strikes