Pale Rider
Legendary Member
Oops - guilty as charged.
I've just checked my ally MacBook and it has a solid base, so sitting it on a cushion is probably less of a risk than with laptops which have vents in the base.
The vents on a Mac are between the two hinges, and the metal case acts as heatsink which should reduce the risk further.
Still worth keeping a close eye on the temperature.