10. Brooklyn, New York
Who says every New York startup has to work in Manhattan? According to BusinessInsider, Brooklyn ranks directly behind Manhattan as the borough with the most startup activity (including two from 2010′s 25 Hot New York Startups You Need To Watch list.) Recently, Reddit co-founder Alexis Ohanian announced that he was moving to Brooklyn specifically to find and fund early stage startups in the area.
I think you'll agree, Jay-Z was on to something.