One of the easiest and most practical ways to improve neighborliness is often overlooked. We strongly encourage exchanging contact info among all neighbors and even landlords. The potential safety and security benefits are obvious, but the information gathered and shared among the neighbors can also be used to arrange neighborhood parties and to check in on each other during and after an emergency. Be sure to keep any information you gather confidential and do not use it for unwanted solicitations.
This is an excerpt from 12 Game Changers: The best ways to make a BIG difference in your neighborhood.