Thanks Jan and Sondrio for your help.
I have looked at the Peter May website and the term ‘baffle you with science’ springs to mind. Its all very well quoting neural networks etc but I bet no one here has read the full zipped download he offers and if they have can understand how he computes his ratings.
It sounds like he is trying to confuse people into joining, however I have my trial here so will follow the ratings to see if they perform well to any degree. Maybe I will become an NNN, a Neural Network Nut!
I have joined informracing this morning for a month via other posts on this topic. They seem a hell of a lot clearer and easier to understand that is for sure. Maybe a combination of both will find me my pot of gold!