To deal with the problem of keeping objectionable material from our children, cooperation of all participants in www commerce is needed.
No single solution will be adequate, but the a combination of technologies can do much to protect children from undesirable influences.
Filtering tools must be improved, but until a market develops they will not be able to provide satisfactory services for parents. Filtering should be based on a combination of initial automatic text-analysis, image analysis, process analysis, and include human validation and review.
We suggest establishment of a domain-based green/gray/red infrastructure, and a consortium to deal with the massive volume of material on the web.
There is a cost to breaking the chain, and there must be willingness by parents and other participants to bear that cost, both financially and socially.