Good finding for one more ethereum scam.
Where and how did you found them if they are not listed on Bitcointalk ANN ?
Actually, there is no big secret how to spot a scammer outside the forum. It is a common situation when such projects with many of red flags upon them try to avoid ann here. The reason is that they can't offer anything really useful besides other project's ideas, fake teams, plagiariarized whitepapers and stolen content.
It goes without saying that they have no chance to survive here. Fortunately for us, but unfortunately for naive investors they have other ways to promote scam. The thing is to find these ways and try to stop scammers at the very beginning.
Concerning particular methods which i use to expose scam, i would rather not disclosure it, because I don't want to teach how to prevent getting caught.