A recent Reuters article discusses what little is known of a Facebook attempt to identify sex predators on the social networking site. The program screens for inappropriate language and exchanges and flags certain conversations for review. Upon finding an inappropriate conversation, Facebook notifies law enforcement. The article details how other companies handle the issue and what other options exist.
go through a series of casually worded questions to determine what kind of issue he's having and how serious it is. There's even a grid for ranking his emotions.
Once he finishes the questions, a list of suggested actions is generated based on how pressing his complaint is. If the boy is more annoyed than than fearful, he might choose to send a pre-written message to the other person saying that the post makes him uncomfortable. If he is afraid, he will be prompted to get help from a trusted friend or adult. There are links to catch anyone who may be feeling suicidal and direct them to professionals and Facebook's own suicide chat hotline.