Talking about the geography, proximity to Stanford and other “ingredients” that make San Francisco a great place to incubate startups here at TCDisrupt, San Francisco mayor Gavin Newsom gave a laundry list of San Francisco startups including Twitter, Zynga, and Foursquare.

Only problem? Foursquare is actually located in the Village Voice building, in New York City.

Note: While Foursquare does technically have “office space” in San Francisco, they are sharing it with another startup, Square. Perhaps avid TechCrunch reader Newsom was referring to this post while up on stage?