Did you think people were flocking to Bushwick to be cool? Think again: everywhere in the city is experiencing an influx of people, especially renters. Those who gloated about what would happen to those who bought properties in Bushwick in the last year or so “when the subprime market crash ruins the economy” — as if it were that one thing that moves the American economy — forget that when people stop buying, they start renting. Gloat on — your rent is about to go up. Bushwick, Sunnyside, Parkchester, Washington Heights, no matter; with ever more people and not even close to enough new places to put them, some will have to jump ship for less-crowded environs.