I must commend you for this post. You must have done a lot of research before coming up with this. It's really educative and enlighten. I don't really buy the idea of excessive use of headset. When it is used excessively it does more harm than good, most especially, when people that are nearby can hear every bit of what's been listened to. Ah! It's very bad and unhealthy. Thanks for sharing. I give it all to you. I'm resteeming too. #OWB