For those who don't know what a 'NINJA launch' is:

It is when a new coin with pretty icons, graphics, and a slick looking wallet is all of a sudden announced without any prior notice. Everyone rushes to setup pools and insta-mine it. These coins usually tend to be PoS coins with a very short initial PoW minting period. The wallets also tend to be buggy.

After a few hours of mining, PoS kicks in, PoW ends, the 'developer' give a sense of commitment, a strong following emerges. Within a few days the coin gets added to exchanges, promises start being made, believers start believing it's the next big thing, wallets gets updated, roadmaps, hard forks, etc..

Once on an exchange the price starts rising, greed begins to emerge, miners start selling off. The price takes small dip due to the initial unloading by miners who need to pay for the rented hash/asicis. But soon it starts to rise higher as the 'sheep' start getting fooled into buying. Holders start staking and unloading on to these poor souls.

Finally the so called 'developer' dumps his bag and moves on to the next scheme. Within a few days, the 'developer' disappears and the coin gets de-listed from the exchanges. The hopes and dreams of the sheep are crushed.

It's quite an entertaining spectacle. The threads posted are a great example of what such a scheme looks like from start to end.

Early adopters with powerful ASIC's or lots of BTC to rent hash power have the most to gain, second only to the 'developer' (this really needs a better name).

100% of the time there is one 'developer' (better named in this case a ponzi) who spends a few weeks cloning a few coins, then releases them one after another in a series of "NINJA" launches. Rinse, repeat. This person, having access to the source either creates a prime, or insta-mines several blocks moments prior to and after release.