Red Hat makes money because companies want experts to provide support.

FORBES: Red Hat At $1 Billion

Red Hat makes money giving away software and selling support services.

FORBES: Death of Copyright Is Greatly Exaggerated

Companies like Red Hat make big money dishing up Linux to major corporations.

FORBES: Magazine Article

The most valuable commodities are the driver and the ball, which consumers spend the most money on, followed by the hat, highly visible on television and always during interviews.

WSJ: Rory McIlroy's Meltdown: What's Wrong?

Revelation is really like one of those old-fashioned editorial drawings where Labor is a pair of overalls and a hammer, and Capital a bag of money in a tuxedo and top hat, and Economic Justice a woman in flowing robes, with a worried look.

NEWYORKER: The Big Reveal

Red Hat and Novell, its main rival, still make money by giving away Linux and charging for support: customers sign up for a subscription that gives them the right to all the updates and someone to call if something goes wrong.

ECONOMIST: Open-source software in the recession: Born free | The

The group boasts more than 4 million members capable of pouring money into political races at the drop of a hat.

CNN: STORY HIGHLIGHTS

Strachan's successor will have a hard act to follow since he was the first Celtic manager to clinch a hat-trick of titles since Jock Stein, despite having significantly less money to spend than acclaimed predecessor Martin O'Neill.

BBC: Strachan eyes McGhee as successor

Companies like Red Hat (nasdaq: RHT - news - people ) make big money dishing up Linux to major corporations.

FORBES: Cut Your Tech Bills