I think I've told this story before, but when I worked in Va in 80-81, a local talk radio host promoted for a week or so he was going to have a well known psychic on his show. When the psychic did the show, the lines were full and the calls continuous. I can't remember how long the guest was on for, but eventually the host fessed up the guy was nothing more than a cold reader. Those locals were pissed, but the station got a lot of publicity.