This March 2011 Google started to role out the Google "+1" feature. It’s Google’s big push into social media with a button on the search engine index page which acts in a similar way to Facebooks "Like" button.
Users who opt for the "+1" button trial will start to see "+1" next to each of the search results.
When you "+1" a listing you are effectively giving it your stamp of approval with your name associated to the link across Google. It will also show up on your google profile whcih you need to have in order to activate the product.
Well worth checking out.
