title: what is og: in meta content of site?
body: <p>How to use og in meta of a website. I have seen in many sites like </p>
  
  <pre><code>&lt;meta property="og:title" content="Art And Artistic - Its All About Your Talent." /&gt;
  &lt;meta property="og:url" content="http://artandartistic.com/" /&gt;
  </code></pre>
  
  <p>Is it helps in SEO?</p>