A few months ago a technical writer on the Microsoft Communications Server team contacted me about updating own of my older blog articles for the purposes of publishing it on TechNet. After some re-writes and a healthy portion of editing a much more polished version was posted up in the following locations in mid-August:
NextHop Article: http://technet.microsoft.com/en-us/ff928310.aspx
TechNet Library: http://technet.microsoft.com/en-us/library/ff928310.aspx