Who puts their speakers right up against the back wall and why?

I would like to know how many of us follow the "rule of thirds"? As I'm sure you already know the speakers "should be" a third of the way into the room as well as listening position a third from back wall.  This is untenable in my music room as it is only 18' deep. I'm not into near-field listening. So, what is a more reasonable (actually attainable) rule?  Yes, I know use your ears!  I'm simply asking what other A'goners have used as a starting point and where did they end up? Thanks for your input.
Regards, Barts  

I started out jammed into the corners and toed-in to point directly at the listening position.  Ended up with speakers 3 feet in and toed-in less.
Listening chair about 2 feet from back wall (ears at about 2.5').