NY Wiki

"NYWiki.com is a collaborative community that's writing the ultimate reference of every person, place, and thing in New York City. The idea is to allow you to add your own writing and photos to the site about whatever facet of New York interests you. Whether you are an expert in the history of the city, want to document one particular building or restaurant, or are obsessed with cataloging every shwarma stand in the five boroughs, you can use NYWiki as you please. The only catch is that other people can edit anything you write..."