I've lived in New York City practically my whole life. I currently live in Brooklyn and commute to Manhattan. No matter where I go to hang out, there are always tons of people around, eating, drinking and partying. From my perspective I haven't noticed really any slowdown because if you walk in to almost any store on a weekend or after work, many people are still shopping for clothes, food, electronics and whatever.
In terms of jobs, I knew of a few people who've lost theirs but they were able to find new jobs in a matter of a few months.
So again, I don't notice much slowdown in NYC. In fact places in brooklyn such as Williamsburg, Carroll gardens, park slope are growing in popularity and people are moving to these for slightly cheaper rent than in the city. A few years ago, I remember that these places used to be very crappy and run down. Now they are blossoming.