If the euro-zone's sovereign debt troubles continue to worsen and spillover to the wider financial system, then China's shipping outlook may shift again.

FORBES

From a cost perspective, the shift to digital delivery of content could help Amazon avoid costly free shipping subsidies.

FORBES: Amazon Sold 6M Kindle Fires In Q4, Analyst Estimates

As if congested shipping and rail were not enough, there is also a shortage of long-distance lorry drivers, who shift the bulk of America's freight.

ECONOMIST: Logistics