"Concrete jungle where dreams are made of, There's nothing you can't do, Now you're in New York!" These are the words of Alicia Keys from Jay-Z's recent hit, Empire State of Mind. As it applies to the restaurant world in New York City, the one thing that you can't do in the past was expand to your hearts content. In the past, rent was a prohibitive factor that limited the ambitions of restaurateurs. A couple of weeks ago, NYTimes did a feature on Michael Bao Huynh and his quest for a dining empire due to the lesser rent in these tough times. Well, you don't have to be a big shot to expand these days, even places in Chinatown are expanding. Bo Ky has been a steady presence on Bayard street for years. A couple of weeks ago, they opened a second location on Grand...