I understand your doubts. However, if you copy these trading signals from a demo to a live account, then your live account will profit for real when demo account grows. It does not matter if signals come from a demo or real account. What matters is if signals are winning.
Dear Rimantas, of course you are right, what matters is if signals are winning. But you also know that everyone which has more than a very little experience in trading the Forex market is aware that what happens in a demo account is never perfectly reproduced in a real account, there's always a lower performance. Same thing when you are working with different brokers, because changes in swap, spreads, commissions, slippage and liquidity can cause dramatic disalignments from theory to practice.
Not only... also the copying technology plays a role... and people who tried the AutoTrade here on MyFxBook have a clear idea of what i'm talking about. It's quite common to find yourself loosing money while you're copying a winning strategy.
I know your websites and your work, I'm not an hater and i'm not writing to criticize your system... but i hope you can understand that a serious person that decides to give his money in the hands of an automated strategy wants to be sure that this strategy is at least trusted from the man who created it.
Unfortunatly, unless you put a decent amount of your own money in a real account and let it run for a long time, you're sending the clear message that you don't believe yourself in your system... Then why people should believe in your strategy more than you?