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 the coins is newly launched the first blocks can be mined very fast as the difficulty requires some time to adjust. It is true that that counts for most new coins. That's why it is important for the sake of fairness to announce the launch date reasonable in advance to provide pretty much everybody with the same chances to "benefit" from low difficulty blocks. It also helps ensuring a healthy coin distribution.