I know p&d but I've never tried it before
A good friend showed me his benefits on Big Pump Signal, about 5% in the last 2 weeks, I believe so, but I've always heard that these things were a scam.
This group has more than 100k members, do you think that's how this particular group is benefiting?
I do not know which group you are talking about but the main problem with pump and dumps is that people do not tell you which coin to buy before they buy it themselves. Say they get in at 19 satoshi and make it 20 than they tell you to buy it and wait until 25 to sell and you buy it everyone else too and they get out at 24 making it 23 and than people see the price is falling and they start selling too and it never reaches 25.
The problem with pump and dump groups is that no one really trusts each other, since no one trusts each other there is no way to make it on time if you play it right. However, there was a telegram group with a bot and which coin will be pumped was decided according to the last digits of litecoin block that is mined at exactly same time everyday. That way no one knew which could will be pumped before anyone else and everyone learnt which coin will be at the same time, still had trouble not selling but at least buying was decentralized that way, that could work.