Social Networking For Your Apartment Building?

New York-based LifeAt wants to create a social network around your residential building. Do you need one? Nope. But maybe you’ll use it anyway. And perhaps you’ll even get to know some of your neighbors.The building managers control the network and post information about the building itself. Residents sign up to get news about the building, interact with other users, etc. They’ll provide information about local businesses (dry cleaners, restaurants, delivery services, etc.) and allow residents to post reviews (similar to Yelp, but even more geographically targeted). They’ve also included a marketplace for people to buy and sell goods within the building.
http://www.techcrunch.com/2007/10/16/does-your-building-need-a-social-network-why-not/