Just be aware that you may be responsible for any rescue costs, especially if the emergency is more perceived than real. Seems that a lot of people use the beacon when they're tired, frustrated or want to end a trip early, causing major headaches and dangerous situations for rescue workers. I work with a guy who has been on two false rescues, one involving a group participant wanting to go home early, and the other a pair of canoeists who were wet and cold. Discomfort, yes, but hardly an emergency.
Oh yeah, forgot this one. A hiking party hit the panic button when the saw a bear.