Yeah, we're all for a green San Francisco. Is it just us though, or are the city's efforts starting to smack of greenwashing? Following the green building mandate announced today, Green Giant Gavin's also turning tricks at the Ferry Building, handing out aluminum water bottle as part of his "Take Back the Tap" program. According to our tipster, Gav blathered on for 35 minutes before the great dole; his response when the crowd became restless: "oh no, hand out the bottles, i don't want to lose any votes." Right.