Change thread title from [PRE-ANN] to [ANN] immediately. Ninja launches aren't fair and will hurt the price of the coin. 
Most people probably don't pay attention anymore to these type of project anyway. But there are still these guys trying to make a quick buck with an instamine
They will never disappear -.- if there was such an opportunity to earn, why not
You know what the word "earn" means? Even if it might mean different things, I have quite a clear picture in my head of what that word should represent. Scamming people isn't "earning" money, it's stealing money.
I'm sorry for being a complete newcomers but, what's an instamine ?
When there is no difficulty because it is brand new so a solution is found instantly so you get the reward with no work
in any case, this is in most new coins.