The festival of Succos is upon us and it's time to get that succah up if you haven't already. I was recently told about a fantastic mitzvah that is seen in the chabad community in Crown Heights. There are certain individuals that make their succah available to the public when they are not using them. Evidently there is a sign (yellow I believe) that les people know that their succah is now available for public use. Some will even put food and drink for their guests. I find this to be such a spectacular mitzvah and I wonder if anyone has ever seen this anywhere else.