Google has rolled out one more feature to its social search. The +1 button is a button that will allow you to recommend search results, ads, web pages etc., to your friends. This feature is currently available for search results page. Google will add the +1 button feature to ads and also pages, you can sign up for e-mail updates for the same.
Google says that, “We expect that these personalized annotations will help sites stand out by showing users which search results are personally relevant to them. As a result, +1’s could increase both the quality and quantity of traffic to the sites people care about.” The +1’s will also be considered by Google just like it uses social signals from other services to determine a page’s relevance and ranking. It works quite like the Facebook 'Like' option.
How it works
When you run a search, with your Google account signed in, and find a quality page in the organic search results, you can click the +1 button and recommend it (the site or page) to your friends. The next time your friends sign in to their Google account and run a similar search, he/she will find that you have recommended a particular site or page. Your friend can then quickly follow the recommended link knowing it is worth a visit as it has been recommended by someone he/she knows and trusts.
The +1's, according to Google, will make search even more personal and relevant. Users can recommend the content, ads etc., that are of high quality and the site or pages that has the quality content gets human recommendations and can expect better ranked for their quality. Here is a video of the +1 button released by Google. You can visit the Google Webmaster Central Help Center for any further +1 related queries.