Probably the best way to invest is to find a site that gives you the best price in return. Check out new marketplaces based on blockchain. Its one of the most secure ways
I think this is a nice way to get yourself scammed, there are many sites that makes promises about high returns and then people realize too late that is nothing but a scam, it is better to get smaller earnings since the risk of getting scammed goes down significantly, remember if it is too good to be true then most likely is.
Yeah if things are too good to be true then you should think many times before you invest.
Dont believe in their flowery words as it will just fool you. And yeah its better to have small profit than " huge profit" but a scam. Be vigilant and be smart enough when investing.