Use the +1 button to publicly show what you like, agree with, or recommend on the web. The +1 button can appear in a variety of places, both on Google and on sites across the web. For example, you might see a +1 button for a Google search result, Google ad, or next to an article you're reading on your favorite news site. Your +1’s and your social connections also help improve the content you see in Google Search.

contributor website; http://www.alexefarias.com.br