Authorship might not influence search results a great deal today. But based on this quote from Eric Schmidt & Jared Cohen's The New Digital Age, it is likely to do so in the future:
"Within search results, information tied to verified online profiles will be ranked higher than content without such verification, which will result in most of the users naturally clicking on the top (verified) results. The true cost of remaining anonymous, then, might be irrelevance..."
- Eric Schmidt and Jared Cohen, p. 33