Never put laptop in your lap

Hi friends
bit suprised reading the title.
I know most of you want to argue that laptop is for lap, so there is no danger in keeping it in lap.
If you are using laptop for a longer period it will get hot and there is danger of burn.
you may feel little warm first day, but as time passes it will have effect on your skin.
Here is something i got from net Regarding Mac laptops
We've heard the stories about overheating MacBook Pros, and have even heard that Apple has quietly updated the line's firmware to resolve the problem. However, the company apparently still doesn't want to take any chances on users getting a little overheated while using the new MacBooks, so they've included a warning in the computer's manual (which also appears in the manual for the MBP), advising customers not to use their laptops on their laps: "Do not leave the bottom of your MacBook Pro in contact with your lap or any surface of your body for extended periods. Prolonged contact with your body could cause discomfort and potentially a burn" Apple's solution to this is to recommend that customers put the computer on a desk or other flat surface.
source
http://www.engadget.com/2006/05/19/warning-from-apple-dont-put-our-laptops-on-your-lap/