I think it's time to cashout on HashNest.. Randomly around there website, previous mentions of 4 PH/s are changing to 3 PH/s.. Also noticed that some mentions of 4300 Antminer S2s has changed to 3300 Antminer S2s.

If they are running a scam, they are rather lazy.. 50% of their site mentions 4 PH and 50% has been revised to 3 PH..