Burn In

What is it?  My MDR-V6s came in today, and I always hear people talking about "burning them in".  How should I go about this?

http://www.head-fi.org/t/610546/how-do-i-burn-in-my-headphones

Found that through google, not much of an 'audiophile' myself, had never heard of doing this to headphones. Also, just search google, should be able to find lots of suggestions as well! Good luck!