• Do many people agree to terms and conditions without reading them?
• Yes, I think the majority do agree to terms and conditions without reading them.
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• What happens when you click Facebook button?
• It means agreeing to terms and conditions and other many things as well, without actually reading the contents, And giving permission to others to collect and use the private personal information.
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• Why are kids under 13 banned from most social media sites? 
•  The kids under 13 banned from most social media sites, because they are unable to make an effective decision, and don't understand what personal information they should keep private due personal protection. 
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• What is the reason for that restriction?
• The restriction is sort of protection to keep the kids in safe.
• How some kids under 13 still use the sites?
•  The kids under 13 years given a false age, to use the social media sites.
• What is the best way to protect children?
• Teach them from an early age how to stay safe and private online.
• Give examples for this?
• - Asking before tagging someone in pictures or videos.
• - Not revealing personal information.
• - The kids must recognise other,s opinion may be different to their opinions
• - The kids should understand that, they might be watching and recording every things by someone they don't know.