Google +1 is the latest Google tool. It allows users with Google accounts to share their interest in any content to their other connections, similar to how “Facebook Like” works. Google +1 is a social media tool that is easy to implement on your website. This article will teach you how to do so, and discuss its SEO advantages.
Technical Background of Google +1
Before we get started, here is a quick summary of Google +1 and its background:
1.) Any user with a Google account can +1 your website. This is true if a person is logged into Google at the same time they are browsing content on any website with a Google +1 button. In search results, a person can also see this button, although there are some observed limitations (see below).
2.) Google +1 can both be implemented in non-Google websites and in Google search results. See screenshot:
In a particular observation of two Google accounts on the same IP address, the first Google account is owned by a webmaster that adds Google +1 to his website and in particular uses the Google +1 to share his interest with other users.
The second Google account is owned by another person that does not use Google +1 at all. Whether they are using the same browser or a different browser while accessing the Internet at the same time from one public IP address, only the first Google account will see the Google +1 button in the search results. The second Google account will never see Google +1 in the search results, even though the second user is logged in to his Google account.
This implies that Google +1 cannot be easily manipulated by increasing its count simply by having different Google accounts on the same location.
3.) You cannot implement Google +1 in private pages. Examplea of a private page are pages which are only accessible to you and a few people you have granted access to. Example of private pages are the admin pages of your website or any pages that cannot be accessed by public visitors, including search engine crawlers. The pages need to be publicly accessible before you can implement Google +1.
4.) Ideally, one URL in your site corresponds to one Google +1 button. But you can place more than one Google +1 button on any page as long as you are using the href attribute (to be discussed later) of the button. This attribute tells what URL the button is assigned to.
Basic Code Implementation
Most webmasters want to implement Google +1 on their site after being suggested to do so from a Google Adsense tip. If you are also a Google Adsense publisher, most likely you have received these messages as well.
In case you have not received an invitation, you can do some very basic implementation following the steps below (the steps are applicable to any dynamic website or blog)
1.) Login to your administrative panel. 2.) Open a template file in your site that contains the </body> tag. In Blogger there is only one template file to edit so its not an issue. For other CMS' like Wordpress, this is the footer.php in your theme files. 3.) Copy the code below just before the </body> tag:
The main advantage of adding this in the footer section is that it reduces the effect of JavaScript loading in your overall page load time. Most JavaScripts are implemented in the header section. But the Google +1 JavaScript can be implemented in the footer.
After editing, this JavaScript code can be found on all pages of your website before the closing of the </body> tag.
4.) Since one URL in your site corresponds to one Google +1 button, you need to add this one line of code somewhere between <body> and </body>:
<g:plusone></g:plusone>
The code above will produce the Google +1 button somewhere on your page (depending upon where you paste it). Supposing your blogger template has this code in the sidebar, you can add Google +1 like this:
Search Optimization 
