My Google Doc Problem

I was recently the victim of an online privacy breach because of Facebook. A member of my group had posted a screenshot of their computer which accidentally allowed anyone with access to the photo to see the URL. While we were working on the Google Docs paper we suddenly noticed a number of people had begun editing our paper. At one point there were 13 anonymous users posting pictures and text to our document that was completely unrelated. While some of the changes were humorous such as adding a photo of Nicolas Cage to our cover page and changing our bibliography to say "Plagerized the whole thing", the intrusion was frustrating. The group leader was forced to close off all public editing and start a new Google Doc. After the new document was created our group was provided with new editing privileges and we reread the entire business outline for alterations. This was a long a tedious process that has taught me a lesson about open source sharing. There are precautions I never believed we would have to take to protect our privacy because Facebook is open to more than just friends.