Confirmation, but not surprising, that author highlighting improves ctr rates in serps
Questions and Answers - Google+ edition - Yoast
- How do you think G+ will help SEO for your website?
It's already helping. Author highlighting through rel=author in combination with Google+ is proving to be a tremendous improver of click through rates from the search results. What would you click on? If you saw 5 results and one of them had an author picture next to it and stated the author was in 10,000+ circles? Right. Awesomeness.
For the "average blogger" though, who's not getting highlighted in the search results yet and doesn't have a big following on Google+, it might seem less obvious. But trust me: you want to invest the time in it.
Questions and Answers - Google+ edition - Yoast