So far he hasn't scammed anyone, so calling him a scammer is a false claim.  Part of investing is making risks, and 2 ETH risk to me so far is really nothing.  I think the idea is great and if it does succeed, it would be wiser to keep it going instead of cashing out. If it does fail and he takes all the ETH, then its the risk I was willing to take.  So far I made back .19 Eth in less than 2 days and so far so good.  If I lose 2 Eth, then whatever, on to the next thing.  Maybe in the future revisions he can fix and adjust the code, but for now, I am fine with it.