Zap, a portal for children run by European Schoolnet, uses the following criteria for assessing whether a site is 'safe' and appropriate for young Internet users.

• Content must contain information relevant for the intended audience and uses appropriate and suitable vocabulary, language or concepts.

• The site must not contain, promote, or lead to illegal or unsuitable material, including:
o paedophilia
o pornography
o violence
o racial hatred
o prostitution
o addiction to drugs

• The website must not contain or lead to unmonitored chat or bulletin boards bringing children into contact with strangers without adult supervision.

• Advertising should be kept to a low level, and must be suitable for a young audience.