Few days back Google has released + 1 button for users which allows to recommend the webpages and stories that you like on internet to your friends. Google +1 button is similar to Facebook like button. When you click +1 on any web page, you are publicly giving it a stamp of your approval. Your +1’s can help friends, contacts, and others on the web find the best stuff when they search.
If you want to +1 web pages on the internet, you need a Google Profile as the sharing is based on Google profile. Your +1’s are stored on a separate tab on your Google profile.