Google has introduced +1, similar to Facebook’s Like. Facebook's "like" has become a great tool for marketers to promote the product & services. Google has been taking the search experience more social with this +1. It is presently available in Google experimental search site. +1 stands for “this is pretty cool”. All the +1′s you have made will be available in your Google profiles. By logging into the Google accounts, you can add this feature from their experimental site. Go to Google.com & search with a keyword. This +1 appears & you can click on to recommend it. There is a likelihood of this feature being misutilized for the SEO purposes. This feature will also be factored into ranking of the sites.