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Australia bans social media for under 16s
(www.theverge.com)
This is a most excellent place for technology news and articles.
why would parents need a justification to parent?
Peer pressure is real. Kids get social media accounts way too early because it's difficult to justify holding off when all of their classmates have them. It causes actual social issues for kids when they are the only one without something. They get bullied etc, so parents are effectively forced to accede. Making it illegal gives parents a reason to say no, which might slow down the uptake.