Most signal groups are run by people with hidden agendas and dump their coins after they publish signals. They're like a more ethical form of pump&dump groups. Plus, by the time the signal reaches you, chances are hundreds of people have already bought in, and you will be chasing pumps. I am not saying that there aren't legit groups out there, because there are, but it's always best to learn technical analysis and make decisions on your own. Lets not even talk about the fact that most groups are run by noobs who only steal signals from other groups...