By: Kate Murphy, New York Times
Letting a laptop rest on your thighs — or worse, sink into a cushy comforter — prevents internal heat from radiating outward and can block air intake vents. This causes overheating, a major cause of component failure in computers. Using a laptop on a less-than-flat surface can also put the hard drive at an awkward angle, which can also cause damage.
Read more at http://www.nytimes.com/2011/09/29/technology/personaltech/tips-for-avoiding-user-errors-with-computers.html
