An awesome blog post, I just given this onto a student who was doing a little analysis on this. And he in fact bought me lunch because I found it for him.. :).. So let me reword that: Thank you for the treat! But yeah Thank you for spending the time to talk about this, I feel strongly about it and love reading more on this topic. If possible, as you gain expertise, would you mind updating your blog with more information? It is extremely helpful for me. Two thumb up for this article!