Whenever I come across a Forex "predictor" or "signal" service, for me, it boils down to one thing, and one thing only -- show me your P and L. That's it. Show me, in black and white if you're really making money.
Anybody can create an Excel spreadsheet and make up numbers. But posting a real P and L from a live trading account puts your money where your mouth is. And, it doesn't reveal any "trading secrets," it simply show a track record.
I've challenged many a "guru" to show me their P and L and have been counter-challenged. I always show my P and L, but I've yet to have a single "guru" show me theirs.
If any of you are considering paying for these services, make them show you real proof that they know how to make picks and see signals -- get that P and L!