I've been trying to find a easy-to-use group calendar tool for my wife and I to share so we know who has what appointments. She writes her appointments down on a wall calendar in our kitchen, but it doesn't seem to work for me. (If it's not on my computer or accessible by computer, it doesn't exist.) 30 Boxes might just be the answer. I am not a big "social networks" guy, but this simple calendar system that you can share with "buddies" might just work. Granted, it's a free service and I am not sure how they're going to make money, so it could disappear in the blink of an eye. For now though, it's worth a try.