<http://schema.org/image>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2011/03/twitter-bird-icon-pillow_2-520x245.jpg>
<http://thenextweb.com/twitter/2011/03/31/twitter-just-unveiled-web-intents-heres-how-to-use-them/>