Tech is big in New York -- but the alley still ain't the valley. Here's our annual report card.
FORTUNE -- Last May when Yahoo (YHOO) CEO Marissa Mayer paid $1.1 billion in cash to buy Tumblr, New York techies cheered. Finally! A New York startup exits for more than a billion dollars! This hasn't happened since Doubleclick sold to Google in 2007. And it is one of the signs people MORE