This solution, in my opinion, is only quick and easy for the 2% of users with the technical expertise to understand it. Facebook, Twitter, et al. have nothing to fear.
So how much effort is it to create metadata for new blog? Here is an example.resource:introducing-a-semantic-web-server a resource:blog ; dc:creator resource:donaldmcintosh ; dc:created "2016-04-13T11:07:00"^^xsd:dateTime ; dc:title "Introducing a semantic web Server" ; triki:include content:introducing-a-semantic-web-server.md ; triki:restricted triki:public .
It does not take long to create.