I'm reluctant to pass judgement just yet.  I tend to agree with examplens' comments in the other thread that the participants of a ponzi shouldn't be tagged for their naivete.  Unless there's proof that alterra57 or HedgeFx are facilitating the ponzi, I think the red-tags and the flags are inaccurate.  I'm also not convinced that the addresses used aren't merely coincidental due to them belonging to a relatively popular exchange, as nutildah has pointed out.

I'm not saying there isn't something suspicious here, but as things are at the moment I'm not seeing enough evidence to justify the tags and flags.  I'm going to hold off on support or opposition for the time being.