Social media can provide an invaluable source of information for investigators. Criminals will use social media to share information about their whereabouts and those of their associates. They also have been known to share photos and videos and also windows into their thought styles. Some criminals even mask their bad intentions as stories.Some might also learn to use code to communicate with others who share the same malice.If enough of the criminal(s) posts are read in order, over sometime, specialists in criminal psychology and computer forensics can gather a large set of tolls to not only understand the criminal's intentions online but predict their next move.A large enough sampling of like minded individuals can also allow sophisticated algorithms to correlate on the online behavior of other bad actors.