Flipfor.Us is fun service which allows you do a very simple thing, Flips a coin virtually and tell you if it was heads or tell. Now when you do this with friends just put in your email id and his email id. Once flipped you will get what you got. And Obviously you are allowed to choose if you wanted head or tail before you flip.
Now sure how people will use it but very handy when you want to toss with a friend is in a different country and as it sends email you cant cheat either 😛 , so go and flip your coin at Flipforus