The optimists point to a buoyant property market and the region's cluster of high-tech investments.

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According to research firm IDC, the iPhone and its iOS operating system make up 16.9% of the worldwide smartphone market, coming in behind the cluster of phones running the Android operating system, which account for 68.1% of the world's smartphones.

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Several art galleries and glass studios cluster along the eastern portion of Market Street heading away from downtown.

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Online customers will cluster around the point of execution in any market segment.

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Meanwhile, a cluster of small islands in the Inner Hebrides are being sold on the open market.

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Mr Porter argues that companies in the same business, which are rivals in a domestic market, may help each other's exports if they are part of a regional cluster of firms.

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And we gave them a boost with a contract from the Small Business Administration so they can counsel the small businesses that spring from this cluster on things like patents and exporting, and getting these revolutionary products to market faster.

WHITEHOUSE: Winning the Future Forum on Small Business: Closing Session | The White House

So, it's a cluster of factors, I think, that are giving rise to more and more market demand to living in these kinds of neighborhoods.

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Regulators might not like that, since the market will in effect be divided into three parts and limit the choice for buyers to two media powerhouses and a cluster of small companies.

FORBES: Thomson Wins Reuters