the internet and crime

     Years ago, you might have read that computers would one day take a real bite out of crime--mainly by co-ordinating information on crimes, arrests and convictions. The information is divided and often inaccessible. Each local police department has information, as do state and federal  investigative and law enforcement units. Criminals make use of the internet to change identities and "personas". Can law enforcement make use of the internet to keep up with them?