I would not go so far as to say it is not a Ponzi (or equivalent).
The fact is, we do not know what it is. The admin can say all sorts of things.

The admin of Scrypt.cc was also very communicative and friendly.
He told a lot of stories. It was not one of them true.

But, at the moment the site is running with no problems, that's right.

You must always bear in mind, the money must come from somewhere.
And why should someone who supposedly runs an incredibly successful bot,
simply divide its success? From pure charity? Cmon.

Maybe I'm just a burned child. But caution is always better than cure.

Here the same applies as with any other form of investment in Bitcoin.
Do you use more money than you can allow you to lose, you're an idiot.

Be careful and clever.