> It would be much easier if the author of webpages were to declare themselves, sort of a Pagerank but applied on a person/topic level. It could/can be done with structured data. This of course has privacy implications but it keeps the publishers as transparent to the search engine as possible. Verification of sorts would be needed so other people don't use your authorship details on their own site. It's the kind of social fabric/data Google could've perhaps used Google+ for.

This was actually done back when Google+ first was launched — people could attach their authorship and it would be displayed on the search page, and you would also see a list of “experts” for particular categories on the right hand side when you searched for things like “python” or “poker”.

I believe it disappeared with the rest of Google+, because no one actually cared.