A helpful post, I just given this onto a university student who was doing a little analysis on this. And he in fact purchased me breakfast because I found it for him.... smile.. So let me rephrase that: Thanks for the treat! But yeah Thankx for taking the time to talk about this, I feel strongly about it and enjoy learning more on this topic. If possible, as you gain expertise, would you mind updating your blog with more details? It is very helpful for me. Big thumb up for this post!