I see so many services offering to double, triple and multiple in all possible amounts the coins you put to them. This doesn't sound very convincing to me but some of them are offering the list of blockchain transactions as a proof that coins were credited. Is this pure scam like I think or is there a possibility to realy make some coins? Would like to hear your thoughts and experiences.
The transactions you mentioned can be true since these sites though pay for some days! But payments don't means these sites are trustworthy! These transactions are just bait for people. Once they caught in perpetual web of greed, they will gonna loose big!