How to get a copy of all the personal data Facebook has about you.
According to European data protection law every individual has the right to get a copy of all personal data a company holds about them. This law is applicable to Facebook too, since every European user has a contract with “Facebook Ireland Limited”, based in Dublin, Ireland.
Facebook has a well hidden page, where you can send them an access request.
https://www.facebook.com/help/contact.php?show_form=data_requests
Generally all non-users have the same right to access data that Facebook might hold about them.
Insist on your Rights
Facebook tries to get rid of people requesting their data. The first response is often an e-mail with the information on how to log onto Facebook. Of course you can't see all the data that is used in the background this way (e.g. meta data, deleted data).
Sometimes it's necessary to send two or three e-mails, it might be necessary to make a complaint to the Irish Data Protection Commissioner.
Receive a CD
As soon as Facebook gives in, you will get a CD holding your data and a short letter. According to Irish regulation Facebook has 40 days form the initial request to deliver the CD. On the CD you will usually finda a PDF that holds a lot, but not all your personal data. You can expect that the PDF will be more than 1.000 pages long and more than a hundred megabytes in size.
You'll be able to get an idea of the amount of personal data facebook is holding about you. Some of the data will be data that you removed long ago where you did not even know that it still existed.
http://europe-v-facebook.org/EN/Get_your_Data_/get_your_data_.html