The hamsa sounds so mystical. I heard of it in a mystery novel that I read recently. It was about a police officer in Syria during the French occupation who was trying to solve a murder. The hamsa was one of the objects that helped him unravel the mystery. I know it's a novel but I'm sure the hamsa was still used in Syria in that time period.
It seems that the hamsa has not lost any popularity for hundreds of years. It must really work or why else would people keep using it.