And just what, exactly, makes Scrypt.cc a Ponzi? I'd love to see some proof that they are, rather than pontifications and mindless guesses. The burden of proof is on the accusation - and I have yet to see any proof.
They aren't mining.
I've still not seen you bring to the table an reason you believe they aren't mining. Other than saying "Well they haven't proved they are".
You're using the logical fallacy of Negative Proof
X is true because there is no proof that
X is false.
They aren't mining because there is no proof that
they are mining.
http://rationalwiki.org/wiki/Negative_proof