This report from the Center for an Urban Future basically says that for the middle class, there really is no future in New York City. Because of idiotically high housing prices and massive gentrification, the Big Apple is losing its middle-class at an astounding rate.
I can't say that I'm surprised - I've always found myself shocked that anyone can afford to live in New York City because it's so expensive. I mean, obviously it's absurd for anyone to claim that you can't make ends meet there on $180,000 a year (ie. 4 times the median household income in the United States) - you absolutely can (and can live pretty well on that much cash). But "middle class" is not $180,000 a year - that's upper class, whether in New York City or anywhere else. And New York is a ridiculously expensive place where being middle class - truly middle class - is obviously tough.
I guess the day of reckoning is finally - and unfortunately - happening. The city that has long been the place of racial, cultural and class ferment is watching its heart - its middle-class - be replaced by the super-rich. Pretty sad, if you ask me.