您需要添加Open Graph 元标记到您的<head>. 看见og:image 在下面
<meta property="og:title" content="35% of LinkedIn Users Check The Site Daily" />
<meta property="og:type" content="article" />
<meta property="og:url" content="http://therealtimereport.com/2011/08/05/35-of-linkedin-users-check-the-site-daily/" />
<meta property="og:image" content="http://therealtimereport.com/wordpress/wp-content/uploads/2011/08/LinkedIn-Users-Are-Highly-Engaged.png" />
<meta property="og:site_name" content="The Realtime Report" />
<meta property="og:description" content="Now the No.2 ranked social networking site - as of June 2011 - LinkedIn has a highly engaged, profession-focused audience, according to new research from Lab42. Based on a survey of LinkedIn users in July 2011, the data reveals that 32% of users check the site several times a week, and more than a third - 35% - check the site daily." />
