Thanks Rand - that's great information.
When you talk about rankings rising, did you see them rise for the KW's associated with http://moz.com/beginners-guide-to-seo or are we talking about rankings for other Moz pages ? - IE did adding http://moz.com/beginners-guide-to-seo contribute to a rise in rankings across the whole domain or just that subfolder.
I hope you consider making this into one of your WBF's / Posts, as I think it would be fascinating to see the "What you did", "What were the results" etc, and also get feedback from what others have experienced.
Many thanks