Getmooh is an automated call back service. It is designed to help you escape a variety of situations by calling you automatically on your phone at a pre-specified time and playing you a recording which will either instruct you on what to say to elude your tormentor(s), or which will simply give a convincing sense of you being on an important call.
The website suggests that you use the service to escape unwanted date or meeting by making an automated call to yourself. I think it is nice to use it sending birthday greetings to friends. They will be surprised. :)
The GetMoohis free of charge. Simply submit a name, email, and your mobile phone number. You will receive the password immediately by SMS! You can start creating free calls by using the password. All completely free! (maximum of two calls a day)