This was fun to write. It's a subject I'm passionate about and that too few in our field seem to spend time thinking about, sometimes from a lack of time but just as often from lack of focus. Of course Im not sure that the people that would benefit from reading it will be reading miscellaneous articles on SSC, but worth a try!
Article is posted at http://www.sqlservercentral.com/columnists/awarren/3134.asp.