Google has recently rolled out google +1 feature which allows you to help friends, contacts, and others on the web find the best stuff when they search. In order to +1 things, you first need a public Google profile. This helps people see who recommended that tasty recipe or great campsite. When you create a profile, it’s visible to anyone and connections with your email address can easily find it.
Your +1’s are stored in a new tab on your Google profile. You can show your +1’s tab to the world, or keep it private and just use it to personally manage the ever-expanding record of things you love around the web. You can read our article on How +1 works, How You Can Enable It and also Frequently Answered Questions On Google +1
What Does It Mean To Website Owners, Webmasters?
When you do a search when logged into Google, any results that you’ve +1′d — or which have been +1′d by those in your network — will be enhanced. As with regular search results, any +1 favoring you do will show next to those ads, if others in your social network see them. And any +1s that they do on ads will be displayed for you.
For Site Owners
In order to add +1 button on your website or blog you will need to request an invite by entering your email id and URL of your website at this link as you can see in the image below.