Disclaimer: not an anti-religious rant. Some of the religious are suckers for this kind of thing. Most, if not all of the population falls for something stupid at some point in their lives. (At one point in my life I bought into that stupid Tornado air inlet device thing--see, even I can be an idiot. Wait, you already knew that?? Why the hell didn't you tell me!?!?!?!)
Some folks make a career out of it, though...just look at that "here" link.