Sometimes you want to let other people know your location. You could send a bunch of texts or email messages, post status updates on Facebook, or make multiple calls to tell your relatives and friends where you are and where you're headed.
Or you could just download Glympse. This app lets you share your location with family and friends securely, as it sends that info out for you via email, SMS, Facebook or Twitter. Better yet, it shares only for as long as you want; when you say that sharing time is over, Glympse listens.