What was more useful wasn't the question. Social network and social media emerged 20 years ago when people needed a name for following humans. Usenet was not d

What was more useful wasn't the question. Social network and social media emerged 20 years ago when people needed a name for following humans. Usenet was not designed for kill files. Kill files were designed for Usenet. You could construct a very limited social graph from everyone's kill files. But no one had everyone's kill files. And you could construct a limited social graph from everyone's tax records also. Are taxes a social network?