EditorialGuy - 3:41 pm on Jul 5, 2013 (gmt 0)
Whether Google gains anything from Google+ is beside the point.
The relevant question for us is, "Will authorship markup help rankings?"
At this point, there's no evidence that it does.
BUT....Hints from Google (including recently-filed patents) certainly suggest that, in the foreseeable future, the Google+ authorship/identity platform could benefit:
- Authors who have authority for a given search topic, and...
- Sites that publish works by those authors.
That doesn't mean authorship markup will benefit everybody, though.