If you implement Google’s authorship markup properly, you will begin the process of getting your content labelled as belonging to you. This helps Google differentiate between stuff you wrote and stuff that other people have copied or scraped from your site. Once your face (or logo, depending on how you set things up), starts to show in the search engines, it gives your SERPs an authority which helps with ranking (you are nearer the top) and with branding.
How Do I Get My Face In The SERPs?
First you have to implement rel=author on your WordPress site. To do this go and download the plugin and then sign up for our free membership site where you can get support. It won’t work instantly, but to get it to work at all, you must take the first steps as soon as possible.
Here is a page of the SERPs showing my face amongst others with bigger social profiles than I have. Since this started to work for me, I’ve had increased traffic levels to my site.
And here is another screenshot, showing a number of my posts with a face!