If you change your mind, you can shut it off at any time. And of course, for those videos that you'd rather not share, mark them as private and they won't be sent to any other site.
Share YouTube Videos Automatically On Facebook, Twitter & Google Reader
From the YouTube blog: As we learned in kindergarten, sharing is good. We want you to be able to do more of it with your videos. With a simple one-time. Continue reading [https://www.hypebot.com/hypebot/2009/06/share-youtube-videos-automatically-on-facebook-twitter-google-reader.html]