Google Authorship

[crescendo]

Google authorship is Google’s way of linking an author with his/her content. It links author’s G+ page with author’s content. So that content is marked permanently with that author by Google search engine. It reduces the possibilities of getting your content copied by others. Because once the content is linked with your G+ profile, then if anyone else uses it, it will be duplicate content.
The simple way to link your content with your Google+ page is entering the links of the websites publishing your content under your contributor sites link in your Google+ profile.

[john00]

Google authorship is the authorship to see the Google + page just below the website and blog in a Google search snippet.

[anirban09P]

Google Authorship is a solution Google came up with to connect a piece of content with the Google Plus profile of its author. The modern online landscape is flooded with content, since SEO’s have been screaming, “content is king.” Google Authorship provides the tools to allow your content to cut through the noise.

[rohit]

Google Authorship is a way to link content you create with a Google+ profile, which provides benefits such as your headshot image appearing next to your content in Google’s search results.

[rehal]

Google Authorship is a way for content authors to connect their Google profiles to their online content to establish original ownership, and the benefits for the author can be immense.
Google Authorship could be one of the most significant SEO factors to help improve rankings.

[jackthomas087]

Useful Information ...........

You need to add this: <link rel="author" href="plus.google.com/YOUR-GOOGL... somewhere into head section. And list on your profile that you contribute there. That's all.