New and Easier Approach to Authorship Markup
Google just made our lives a whole lot easier when it comes to displaying authorship in the search results. For non techy people it was not that easy to implement rel=author so they could see the benefits of having their image and links show up in SERP as well as getting the right contribution for their work. Now, having your authorship acknowledged got a whole lot easier.
Google webmaster tools help page  about authorship clearly describes the process. Basically all you have to do is place one link on your Google profile page to the homepage of your site or the sites you contribute to and place a link back from your website to your Google profile.
The best way to do so is to add a sitewide link, like adding a link in your sidebar, footer or your author box or author page. The only thing you need to look after is that the links contains the following parameters:
Replace the [profile_url] with your real profile URL and make sure that the rel=author remains in the link and that the link ends with the + sign.
Example: <a href=”https://plus.google.com/103219547932169098058?rel=author”>Google+</a>
That’s it, a simple link from your website back to your profile page and a link from your profile to your websites or sites that you contribute to will solve the issue from now on. If you already implemented rel=author the old way there is nothing to worry about, it works perfectly fine.
1. Author information in search results – http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=1408986