Rich snippets are getting more important to google in the last month. You can see more and more searchresults with profile images and a link to the google+ page of the author next to them.
Of course a search result with an image is more likely to get clicks than normal results.
how can we do that?
First you need a google+ profile.
Then you have to add your page to the sites you are contributing to. You can do that in the links settings of your google+ account.
The third step is to link from your content to your google+ page and to add the rel=author attribute to this link.