Sutherland Boswell

Import your latest Google+ activity into your site as posts. Currently supports most types of activity on Google+ with more options coming soon.
This is an early version so use wisely. Please let me know about any bugs or requests.
<h3>Roadmap</h3>
This plugin is currently in its early stages, so send your feedback or ideas to sutherland.boswell@gmail.com and I’ll keep them in mind as development continues. Look for frequent updates, new features, and bugfixes.

Google+ Importer

Automatically create new WordPress posts from your activity on Google+ using Google+ Importer

michaelbeacom

Displays the social widgets from Facebook, Twitter, Google+ and Pinterest with your posts. It also adds some meta tags for opengraph and schema.org as recommended by Facebook and Google. The standard method to do this is by filtering the content of the posts, which is controlled by the options in the admin menu. Buttons can also be displayed by the shortcode [sic] with ability to disable individual buttons for that instance of the shortcode. You can also add it to your theme with do_action(‘sic_sharing’); where you want it to render.
Allows some custom text and css insertion as well as most options for the buttons in the admin page. Compatible with html5 (optional).

Sharing is Caring

Displays the social widgets from Facebook, Twitter, Google+ and Pinterest with your posts. Also adds some meta tags for opengraph and schema.org.

Google+ Importer vs Sharing is Caring