I'm not sure a support group is exactly what is needed -- there are a bunch of those around (nextny comes to mind, and has been around for years).<p>However, I do agree that the startup scene is rather fragmented here in NYC.  While there definitely are neighborhoods with higher concentrations of tech startups (SoHo, Chelsea, and Dumbo come to mind), there really is no 'startup district', if you will.  We don't have a neighborhood like, say, South Park, where you have a ton of smaller startup companies concentrated into a fairly small area, or even a common district home to all the large tech companies, like the bay area has.  We do have a financial district, fashion district, theater district, diamond district, jazz district, etc etc.<p>While not totally necessary, I do think having a physical center where similar types of businesses call home is really an overlooked part of the success of an industry.  It creates a community and helps facilitate a natural type of networking, solely because people doing similar things run into each other every day.  Plus the after-work drinks in the neighborhood bars would probably breed even more natural business deals/partnerships.  I saw that happening a lot when I worked on Wall St -- you'd be tripping over other hedge fund guys at the pubs after work, just because of the nature of the neighborhood.<p>That said, I'd purpose somewhere like Gowanus in Brooklyn, where leases are cheap and the neighborhood is only now starting to be developed.  Lots of Gowanus also has tax incentives associated with it, as it is one of the Empire Zones.  Not to mention you're close to the third largest subway stop in the city, making commuting easy.  Prospect Park is a short walk away as well.<p>The neighborhood is bound to change to a business focused area within a couple of years anyways, once the stadium for the Brooklyn Nets is built a couple blocks away at Atlantic Yards.  Might as well make it a tech-centered district.