Is social trust not a form of currency?

For your twitter example: You register your "domain" on the ethereum name service (ENS). (you would have known that had you read the article). Then use the ENS as part of your twitter. Then in your public digital actions (and even in real life), you share your ENS domain. Done. You are linked to that. Because famous people have loud voices.

How about joe average? How would he get verified? He'd submit his ID, right? Then it has to go through the credit bureau (talk about a closed black box system). So you have private companies managing your social credit.