Giants fans gathered in the streets of San Francisco uncorked the champagne, lit bonfires, danced in a mosh pit and hugged strangers on Wednesday as their team scored its third World Series win in as many championship appearances, a triumph as comfortable as the warm October air and made all the more gratifying by its arrival at the end of a seventh, winner-takes-all 3-2 game. It's the Giants. They do this all the time,'' San Francisco native Barbra Norris, 54, said of the team's odds-defying win in an away game played the night after a crushing shutout in Kansas City. Across from San Francisco City Hall, where the exterior lights had been glowing orange all week, more than 9,000 people gathered in an outdoor plaza where the city had set up a Jumbotron and a vendor sold hot dogs but no beer.