Google+ is one of the top social networks you can’t afford to ignore as a business owner. The more active you are in the community and the better connections you make, the more success you will achieve through this community. You can always import your G+ activities to your blog or publish your latest posts to Google+ to gain more traffic. These plugins help you handle those jobs:
Google+ Crossposting: lets you import your public activities from Google+ into your WordPress blog. This plugin automates this process.
WP Google Plus Connect: connects your blog to your Google+ account. Lets your visitors register on your blog using their Google+ account. They can import their streams too.
WPGPlus: this plugin posts your blog posts to Google+. You can pick and choose which posts get posted. It lets you add more content to your posts using your excerpts.
These plugins make the process of importing your Google+ posts to your blog or sending your blog posts to G+ a piece of cake. They are not perfect but do get the job done.