Similarly, 92-year-old Anne Cox Chambers (No. 32) continues to sit on the board of mega-media company Cox Enterprises, which her father founded in 1898.

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In the past, they were the only ones working with the mega brands that could afford the multimillion-dollar media buys.

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Tying social media into the project, Obsidian came up with the Mega Dungeon.

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It rides the dual mega-trend of ever-better technology, and ever-expanding social media.

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But the slow death of local newspapers and their replacement by ever-larger media conglomerates means that news coverage is being managed by a shrinking number of people at a few mega-oulets.

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