cnbc.com staff

Disgruntled Facebook users vented and poked fun at the outage on Twitter, with the 'Facebookisdown' hashtag receiving 49,000 mentions during the 30-minute period.

The TV host acknowledged that his backing of these products have 'provided fodder for unscrupulous advertisers.'

The restaurant chain has moved to a manual credit-card imprinting system in the wake of a security breach.

The commuter hub is reportedly looking to replace some of its fast-food restaurants.

Hewlett-Packard chief Meg Whitman defended the company's plans to cut up to 16,000 workers.