If you’re not already using the Google +1 button, consider taking a moment to add it to your site. This is a great way to let users save, promote and find their favorite content. The +1 button only takes a few minutes to integrate with your site and works with any Google profile. While this isn’t a Google+ specific feature, we wouldn’t be at all surprised to see it integrated with the service. Either way, it’s another great way of adding an additional avenue for promotion and sharing.
You can learn more about the +1 button from Google.
To add it to your WordPress site, you can use the official +1 button code generator .