Sure, start-up engineers make very good money these days, but there are not enough of them to justify a city-wide bubble of these proportions.

FORBES: Blame Apple For The San Francisco Apartment Bubble

But once they are over the construction bubble will burst, and the city could well be left with thousands of surplus hotel rooms.

ECONOMIST: Lexington: Salt Lake City’s new image | The

News of the company's possible listing comes at a time when rising prices have sparked fears that an asset bubble could be forming in the city's property market.

FORBES: Blowing Bubbles In Hong Kong

Neither city is synonymous with the housing bubble--or bust.

FORBES: Magazine Article

The idea--and remember that ideas didn't have to be very sound at the peak of the Web bubble--was that the wizards in Redwood City, Calif.

FORBES: Excite@Home Was Always A Bad Idea

Yet the reality, increasingly, is that they can't and don't leave the bubble -- the bubble moves right along with them, except that it is no longer merely a bubble, it is a heavily fortified multiple-city-block mobile bunker.

CNN: Barack Obama slept here

But these might be decent problems to have considering the slump the city was feeling after the dot-com bubble and financial crisis.

FORBES: Payroll Tax Be Gone: Angel Investor Ron Conway Discusses Election Victory In San Francisco

"The Shanghai Bubble, " a 1998 essay by Joshua Cooper Ramo, compared the city's building "explosion" with Europe's postwar reconstruction.

WSJ: Shanghai's Pudong District Goes From Soulless to Sizzling

There are times and places when they are unrealistically low (New York City, 1975), and times and places when they reach bubble proportions (Palo Alto, 1999).

FORBES: Is Your Home Overvalued?