I think that there are legitimate HYIP out there. I will try to launch one if I knew that it will stand the test of time without crashing . That is exactly what will make me launch one.
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This is exactly the way they usually try to plan it as well. They are just going to go with the intention of paying the people who were at the beginning and then just keep the money of people who try to invest later.As you said, they are easy to make no matter how much they cost, but it's about being legit for the long term, as a matter of fact, those beginning costs can be considered as investements for people that are starting HYIPS as they will scam people later