Monitoring not blocking (Score 1)

I don't see why schools and library's would consider blocking software. If I were them I would just monitor the sites visited, and check them on a random basis for inapropriate content. Upon finding such content confront the child and let them defend their visit to said site (mistakes do happen). If explanation is not satisfactory revoke privlages. This is the way it should be done at home as well in my opinion. Of course before access is given a lecture or some writing about what is appropriate should be given.