Google + and authorship integration is a pretty big deal for your SEO. Not only it helps you raise awarness in search results, as an early adopter, it is also helping your branding.
Now that I’ve got all of these Tumblr blogs, I gotta find a way to include Google + authorship into this part of my online existence. Seems like I am running 5 blogs now. At least each and every one of them has a different purpose.
But as all that different writing on different websites accumulates itself, it means that it will increase my overall authorship rank. Which might be the new page rank.
In 2013 you definitively need to pay closer attention to Google Authorship, as it brought me results in the previous period of testing. The easiest way so far is to implement it through Yoast SEO plugin.