Depends, bottom of the case should be intake, top of the case should be exhaust. (heat rises)
Just depends on the case layout and how many fans.
Whether the heated air is removed or not does not matter, if there is constant heat in an area it will warm the materials nearby which will than conduct heat, albeit minor but significant when dealing with computer components.
http://en.wikipedia.org/wiki/Heat_conduction
What helps is pushing in 'fresh' air which is much cooler from the outside, good cooling cannot be complete without adequate intake.
Roflmaorbutyeah, that topic name made me LOL.
Kent.
a fan has to suck for it to be able to blow!!!!
well folks, thats my educated opinon on the matter
the real question is, which way works better?