Great informative thread! Thanks FirstYorkie. My little miss Daisy likes to bark only when they're ppl around or are coming towards my house (i.e: Post lady, neighbors, pizza delivery man). I let her tell me that someone's here but will shake the can of coins when she's barking excessively or when I'm alarmed. She usually will stop right away.
I've heard many positive things about clicker training as they provide positive results for stubborn dogs.