You've got to keep your on those wicked scamps over at Property Shark! When their not adding insane data layers to their property map, they are cooking up crazy demographic overlays. For instance, we just noticed that one of their overlays is "Single Men in NYC." The hot areas for high guy percentages: Chinatown, the West Side, Red Hook, and Gowanus, Throgs Neck, and North Shore of Staten Island. Who knew?!