Greetings interesting indeed,
Google uses search engine optimization or SEO to evaluate which content goes to top page when a person searches a topic he requires, although this may not be the best it is the content that complies with Google requirements.
Others use algorithm, popularity and viral or trending to consider if a content is good.
Siri and Alexa can already interact with humans and look for the content you require.
We should then be aware if we are communicating with humans or machines. But how?
Bots are already being used to upvote, some including generic comments.
When we log in on other sites they even ask us and click I am not a robot, because bots can really login and access an account to leave a link or comment.
It will be nice to know how far should we allow this things to prosper. Where everything is done on auto pilot, we do not even need a key board to type or click.
Sometimes content with human touch should also be considered as a good content.
Regards

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