Apparently Facebook decided to open-up profiles to the public yet a little further in future, read more at this blog entry. So whilst a plethora of security research highlights how broken this service really is, Facebook keeps on exposing more private information to third-parties on a sneaky opt-out basis.
Want to catch up how broken Facebook is? Read some interesting (academic) publications regarding Facebook Security:
A Practical Attack to De-Anonymize Social Network Users
All Your Contacts Are Belong to Us
Towards Automating Social Engineering Using Social Networking Sites
As soon as all review cycles are finished, I plan to publish more information on a new security threat with SNSs that we recently discovered.