Why is this on the front page of HN? This is just uninformed ramblings with a reference to an article (Krugman) contain similarly uniformed ramblings.

It just seems lazily uniformed. I doubt he even bothered to actually investigate and corroborate his pump and dump claims, into instead of spreading FUD. If he did, one would think he would have mentioned the alleged DDOS'ing of the exchanges etc. which are widely speculated (even among the 'true believers') to be part of a market manipulation scheme.