Crime mapping: good or bad?

There’s a certain amount of anxiety about crime mapping. One report at the weekend suggested that making crime stats publicly available in map form gives criminals intelligence they would not otherwise have. Mashable are fans though. And they point to this site called Spot Crime which maps where incidents take place. It’s success clearly depends on the quality of data input. Compare the totality of London with just one small part of New York State, Yonkers. It won’t go down well with the tourist industry though.