...to become a YouTube Facebook fan:
* Create a Facebook account if you have not already
* Sign in to your account
* Go to http://www.facebook.com/pages/YouTube/7270241753
* Once you are on the YouTube page, you will see an option to "Become a Fan" on the top right hand corner of the page. Click it to join!
...to become a YouTube Twitter follower:
* Create a Twitter account if you have not already
* Sign in to your account
* Go to http://twitter.com/youtube
* Click the "follow" button under the YouTube logo to start getting tweets every day
Long live social networks,
The YouTube Team