I've seen a few rubbish ones and thought it was all a con until I saw a brilliant one. I can't list all the things she told me but here's one example. She told me that I had been friends with a girl at school called Carol who had emigrated to Australia but was coming back to the UK within 2 months. I thought this was rubbish as Carol had given no hint in her letters/emails that she was moving. The lady also said that we did not exchange birthday/Xmas gifts (true) but when she returned to the UK she would bring me a pressie for my next birthday. The lady described in minute detail what the pressie would be.
Four weeks later I received a phone call from Carol...who was back in the UK after her husband left her. We met....and she handed me the exact pressie the lady had described.
There were many more examples of this lady being spot on.
I'm now in the "firm believer" camp.
Some people do seem to be psychic, butr those who charge for it are usually charlatans. There are many pagan or wiccan people who'd do this for free. Whether you believe or not, is up to individual experience, but it seems that mrs_o's found a good one.