Those +1 buttons you’re seeing on search results didn’t make a lot of sense to me because how can you recommend a site you just found in search results without having visited the site? Now you can put the Google +1 button on your website. This makes a lot of sense. Here’s how to get yours:
Add the Google +1 Button to your website
Copy and paste the +1 code snippet from Google into your web page.
Add the Google +1 Button to your WordPress website
Download and install the Google +1 Button WordPress Plugin
You can install this through your WordPress Plugins, Add New, search “Google +1 Button” Install and activate.
Insert the shortcode on your posts and pages: [google1]