Vacationers traveling to San Francisco and hoping to score some weed have a great new resource at their disposal, courtesy of the U.S. government: a Google map mashup that shows the locations of all the medical marijuana dispensaries in the City by the Bay.

The map, posted on the blog of the Office of National Drug Control Policy, denotes the locations of 71 pot sellers with tiny cannabis leaf icons. The map also pinpoints all the Starbucks stores — just the thing for smokers looking to satisfy their munchies with an overpriced croissant.

Apparently, the ONDCP is trying to make a point about the prevalence of marijuana dispensaries in California, where pot possession and use is legal, under state law, with a doctor's prescription. Some errors have been found in the map (the first version included 27 additional addresses that didn't sell pot after all; Oops!) but it's still the best use of your tax dollars since the same office was caught producing fake broadcast news reports in 2005.

Coming next week, Health and Human Services reveals the best spots to pick up a hooker in Las Vegas.