By MARCUS WOHLSEN, Associated Press – Sat Apr 9, 5:41 pm ET

SAN FRANCISCO – A certain feeling is back in San Francisco. Murmurings of stock market riches. Twenty-something entrepreneurs as celebrities. Lamborghinis parked next to taco trucks.

Driven by social media and mobile startups, the money is flowing in the city's tech industry again, a decade after the dot-com boom minted overnight millionaires and its crash fueled a local recession worse than anything San Francisco has seen in the latest downturn.

A recent tax break for Twitter and other proposals show city officials are hopeful that this latest tech industry prosperity does not portend another bubble and another bust.

"It seems to be the industry that's leading us out of the recession at the moment," said Ted Egan, the city's chief economist. Even so, he said, "it's certainly not yet another dot-com boom."

At present, the signs do not point clearly to the same excess of optimism that led to the high perch from which the city had so far to fall. But some of the numbers swirling around the tech startup scene could stir a sense of deja vu.

»news.yahoo.com/s/ap/20110409/ap_···ing_tech