Helpful or Waste?

How will a crimestoppers type website help significantly in the high level crime areas? Those areas are generally poor areas, with poor/working class people living there. They, I would say with confidence, are less likely to own or use a computer or the Internet. They would have few opportunities to use the website. If they are not already using the phone line, why would the web produce different results? Having a website on this level is a good idea in concept, but will it end up helping stop crime or create more web noise? Is any effort a worth while effort?