How to Opt-out of Facebook’s Instant Personalization  

Article: How to Opt-out of Facebook’s Instant Personalization

I see a lot of people already know about Facebook's "Like" button that will now be available on various websites across the web to increase customization and whatnot. However, what people do not realize is, people who are NOT your friends will have access to the information on your profile page. In fact, it is yet another privacy leak that came to my attention (from a friend that told me) which led me to this article. This "Instant personalization" option is automatically checked so that you will be sharing information with partner websites. While there may be some benefits that appeal to people, this seems like another occurrence of Beacon. If you don't wish to share your information so publicly, here is how to disable this:
1. Go to Privacy Settings in your Account menu.
2. Click on Applications and Settings.
3. Click on "edit setting" for Instant Personalization.
4. Uncheck the box below the picture and click Confirm afterwards.

For more information about this "new" feature, read the rest of the article in the posted link above.