Most people should even have been able to find that out themselves by now, and to know basically that this is something they have to understand will be able to offer them anything than sadness if they manage or decide to join.
What the owners of these groups are looking for are gullible people that want to trade, have no idea how to do so and all they care about is ways they can go in easy and make some bucks quickly, which in this essence, they are actually making more money unknowingly for the owners calling the shots.