A lot of people are concerned about Facebook's recent announcements of new information sharing policies and mechanisms. For those that are curious what Facebook actually exposes about you through its new API, I wrote a little tool that browses the API using the access permissions of a new user with no friends.
Check it out and let me know what you think.
Anything you can see with this tool is visible to the public. (Information you don't see is not necessarily private, since there are other ways to get information from Facebook other than this API.)