Google Plus one is very similar to the Facebook “Like” button. When you click the “+1”) button on a webpage you will then share that link with your friends. The only difference is that because Google doesn’t have a homepage for friends activity your +1s will actualy show up in the Google search engine results.
So how do you add a Google Plus One WordPress widget to your page?
The easiest way is to install the widget on your sidebar as this will create a button for each and every page of your WordPress blog instead of having to go through every single page and add the button manually.
Copy and paste the following code into your site: Google Plus One
Your Google Plus one button will now be complete.
I recommend placing that code in a widget box located at the top right of your screen for maximum exposure.