Seriously, it isn't close. Startup volume here is insane, there's a large number of big-scale successes (Tumblr, Etsy, Foursquare, Kickstarter), a mature group

Seriously, it isn't close. Startup volume here is insane, there's a large number of big-scale successes (Tumblr, Etsy, Foursquare, Kickstarter), a mature group of companies (Google, AOL, Facebook by the end of the year), and a robust small startup community focused in Union Square and Dumbo. Besides, I'd take Boston or Chicago before those cities.