"Teens having a laugh" can escalate quickly to, "... at someone else's expense," and this distinction is EXACTLY the sort of subtlety an algorithm can't filter.
This does not need to become a thread about bullying and self harm, but it should be recognized that this example is not benign or victimless.
This genie is out of the bottle, let us hope that laws about users are enough when the tools evolve faster than legislative response.
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