Even if someone have to make use of free signyal, he must already been an expert, if not an expert, the person will definitely lose, whike paid signals are complete scam.
I know not all traders are on the same par, some are better experienced than others due to more research and learning, but I'd try as much as possible not to refer to them or call any trader an expert, at least for the sake of newbies, some of these signal groups have scammed quite a lot of people impersonating themselves as 'experts', newcomers in the network are always hungry for experts to teach them how to "get rich quick" which is the first mistake they make, but in the long run, they learn there are actually not set in stone experts, but that must be after they have lost some money.