This is designed to alert you to being pushed more than 50m in one second. It then gives you the option to teleport back, tells you who was around the area that you left, and tells you if you were hit by scripted objects and who they were owned by.
Put this in a prim and put a notecard in the prim. The first line of the notecard will be sent out to all registered clients whenever it changes. You'll need to rez this and get its key to put into the client script before you put out the client objects.