Out of interest, has anyone used their Macbook 13" constantly with the lid shut? I don't have the balls to myself
yeah, it's not as bad as some people make out, although it's good to have ventilation all around though as it will heat up.
I've done it with my MBP for a decent while, and no explosions. And my experience is that the MBPs run hotter (thanks to that graphics card).
I do this all the time while watching films (macbook plugged into TV). No problems at all, it doesn't seem to get any hotter than when it's running with the lid open.