The potential ability for stalking users on social networking sites has been noted and shamed. Popular social networking sites make it easy to build a web of friends and acquaintances, and share with them your photos, whereabouts, contact information, and interests without ever getting the chance to actually meet them. With the amount of information that users post about themselves online, it is easy for users to become a victim of stalking without even being aware of the risk. 63% of Facebook profiles are visible to the public, meaning if you Google someone’s name and you add "+Facebook" in the search bar you pretty much will see most of the persons profile.[14]A study of Facebook profiles from students at Carnegie Mellon University revealed that about 800 profiles included current resident and at least two classes being studied, theoretically allowing viewers to know the precise location of individuals at specific times.[4] AOL attracted controversy over its instant messenger AIM which permits users to add ‘buddies’ without their knowing, and therefore track when a user is online.[4] Concerns have also been raised over the relative ease for people to read private messages or e-mails on social networking sites.[15] Cyber-stalking is a criminal offense that comes into play under state anti-stalking laws, slander laws, and harassment laws. A cyber-stalking conviction can result in a restraining order, probation, or even criminal penalties against the assailant, including jail.[14]