Just got off stage at TC Disrupt 2013 where we announced that we’ve added an integration of Google+ on WordPress.com and Jetpack.
You can now share content from WordPress to Google+, comment on WordPress using your Google+ account, and Google will display WordPress content across it’s platform with richer info such as the author’s photo:
Linking to your Google+ Profile creates an official connection between your WordPress.com content and your Google+ account. The benefit? It adds a layer of verification, confirming you are the author of your posts, and helps Google understand who created certain pages, which helps to increase the accuracy of search results.
Check out the full details on the WP.com announcement blog.