Gird your loins: Brooklyn is now officially "Manhattan Part II"

See that chart? Egad. (Via here.) In early 2009, the difference between similar apartments in Manhattan and Brooklyn was $1,800 per month. Now it's around $210 per month. Just a quick reminder of how urban areas develop / certain spots become cool: as recently as the late 1990s/early 2000s, Greenpoint was primarily docks and run-down buildings. Now? Ahe…