Here's a question for the more technically minded of you. I have my MBP sitting on a flat, unperforated metal plate under my desk which I run an external monitor from. At the moment I have with the help of some little rubber feet, raised the laptop about 12mm off the plate ostensibly to aid with cooling by increasing the gap and hence the airflow underneath the notebook. However I was thinking about the Venturi Effect (http://en.wikipedia.org/wiki/Venturi_effect) today and realized that I may in fact be doing the opposite and making the cooling worse. Would it be better to just let the laptop sit on the metal plate without any extra gap as it was designed. This would surely enable the Venturi Effect and cool the laptop more than being raised, any thoughts? A slightly technical question for all of you physicists/engineers out there. Cheers.