Yes but some GPT sites can also become scams as well. You have to spend time working on them in order to make money slowly. But for HYIP you just invest money in it. We say "time is money". So it is pretty much the same for GPT and HYIP if they become scam. You will all face huge loss. Just pick the legit programs. And do not spend to much time or money on one single program to diffuse the risk.