Thanks for sharing that interesting link. He has a good point and ends with a wise standing: However, this is a good time to re-iterate my standard disclaimers

Thanks for sharing that interesting link. He has a good point and ends with a wise standing: However, this is a good time to re-iterate my standard disclaimers: Bitcoin is still a work in progress, and you should only risk time or money on it that you can afford to lose. Mining centralization is one of several potential risks; read Jim Harper’s excellent Risk Management Study for a clear-headed assessment of risks and consequences.