I think they have a slightly higher success rate than what prayers do, which is not very high. Of course, this is if you don't consider the fact that these things are successful coincidentally.
Sometimes it seems as if my Internet connection has connected with the middle ages. Did you people miss the lesson in school where we all learned that that stuff was made up?
It works on those who believe it.
It's called "scaring someone to death".
In this day and age, you need to strap a bomb to someones head with a motion-sensor to make him die from fright, but in primitive cultures a doll with recognizable features is enough to get the same amount of fear.
3 days living in pure anxiety, not sleeping, hardly eating, hardly drinking, heart-rate above normal, death won't be fast enough.
Yes Satan controls all things evil including video
Now Im finished answering questions for today Ill come back and answer more tomorrow Im at my limit :-)