There are several ways to help children to avoid reaching such sites. One is by the use of filters . These are informatics tools that can be tuned to block access to sites that use certain keywords such as child pornography, paedophilia, sexuality and naked. It is best that parents try to fine tune these filters with their children so that they understand why certain sites should be filtered and why they should avoid them. For children, being smart, will eventually learn how to deprogramme the filters themselves.
Filters however can also block in the wrong way.
Blocking words like vagina, scrotum, penis, condom, breasts, genitalia would also cut the user from sites to learn about healthy sexuality and AIDS prevention. Therefore, the filters have to be programmed very attentively and according to the age and psychological maturity of the child concerned. Nonetheless, the 100 or so filters currently available on the market were designed mainly for American children and do not always consider the cultural sensitivities of other countries, nor their use of English, nor the possibility of filtering in languages other than English.