With the size of the FX market being what it is you have to ask yourself why someone would flog market signals to others. Don't they have the confidence in their own ability ? Are they hedging ? My own view is that none of these signal providers last very long. FX trading (other than news) is reasonably random so under the bell curve of probabilities there will always be those at either end. They may be there for a short while, even a year but not many last much longer and I doubt its much to do with skill. Read 'Fooled by randomness'. George Soros had the right technique - get to know those who are able to influence the markets and use that knowledge wisely.