Though the idea seemed interesting when I was a child, I don't believe in psychics now. The notion is rediculous. They are all cons. This reminds me of The Randi Paranormal Challenge. http://skepdic.com/randi.html
I don't believe in this kind. . . this is just a math game of sorts.
I do believe that some people have the ability to communicate with those that have passed. . . . psychic mediums. . . some of them are fakes who take advantage of people (like Madame Cleo!). . . but I feel that some do really have a gift.
Such beliefs are a personal preference. . . . no one should be forced to believe or not to believe in something if it makes them feel uncomfortable. . . like religion. . .