I haven't try any yet joining some of the trading groups because I don't get comfortable it gives more pressure to me. Recently someone invites to my telegram its an unknown local groups and they are stating about

"Invest here"
"Invest to this coin "
"Buy now"
"Sell now"

This is not a good thing they are saying but I leave on this immediately because one of the best source of mine is the forum because this is more knowledgeable members they are one of the eldest  you can trust but you need to have a good information to identify it this is real.