There are many implications that social graphs such as Facebook’s Graph have on privacy. One of the main issues is how advertisers can use data in the graphs from user profiles to specifically target audiences. Using criteria such as race, age, interests and location. There are users who feel uncomfortable about this and feel it is against their privacy, although many are not aware of the process.
The biggest problem of the social graph is demonstrated by how users can now access Facebook information using the graph search. For example, a user could search “Pictures of people who like NRL” and pictures of the users who liked that page would appear in an album. Additionally, a person could search for an album of all photos that their friends, or even friends of their friends have commented on. This shows major privacy issues with the way Facebook’s social graph gives access to data, although there are ways users can reduce this by adjusting their privacy levels.