Yes, one must be careful with ideas.  I, for one, have a great idea but if I mention it won't somebody come steal it?  Briefly, it's about a man who steals a loaf of bread and is hounded by an obsessive policeman.  I call it The Man Who Steals A Loaf Of Bread And Is Hounded By An Obsessive Policeman, a long musical in two acts.  I swear, if anyone and I mean ANYONE steals this idea they will be MISERABLE.