My MBP's been getting really quite hot (more than usual - in no part due to the exceptionally hot weather over here in the U.K), and I was reading some of the threads about the iCurve and other things to support the machine to give it some space to let the air circulate. I went out and bought one today, and I have to say the difference is quite phenomenal! Put it this way, I've been using the machine for going on 4 hours and the thing's luke warm - reminds me of my old iBook (those were the days!). Really, really recommended purchase folks. Of course, the only downer was I had to buy a keyboard with it, but a simple wired Apple one was only £25 so it wasn't much really. Hey! My posture's getting better too! Anyone worried about the heat, some like this is a must.