WankerWeasel (875277) writes "Facebook isn't know for ensuring user privacy and here is just another example of user information likely being shared with others without the user's knowledge.
The default user settings on Facebook allow any applications your friends install on their own Facebook account to have access to all of your Facebook info (the only things not shared are "Interested in" and "Religious and political views" by default). This is a concern since almost anyone can apply to be a Facebook Developer and create an app to harvest the information of users.
This guide shows how to prevent your personal information from being shared with any application your friends might install on their own Facebook accounts."
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