Must reads

I am not smart enough to add much here but this is a great read from the King of Cartography
http://batintheattic.blogspot.com/2009/02/other-knobs-to-play-with.html

which is a riff off of this from one of the focal points of the traditional gaming movement...
http://grognardia.blogspot.com/2009/02/dwimmermount-session-5.html
The comments that are with James' post are also a great read