Référencement-La balise Meta

<meta name="apple-mobile-web-app-capable" content="yes">
<link rel="canonical" href="http://exemple.com/" />
<meta name="twitter:card" content="summary">
<meta name="twitter:site" content="@exemple">
<meta property="og:url" content="http://exemple.com/" />
<meta property="og:type" content="website" />
<meta property="og:title" content="exemple" />
<meta property="og:image" content="http:/exemple.png" />
<meta name="application-name" content="Digg"/>
<meta name="msapplication-TileImage" content="exemple.png"/>
<meta name="msapplication-TileColor" content="#ffffff"/>

<meta name="keywords" content="exemple, exemple, exemple, exemple,exemple, exemple ">


<meta name="description" content="exempleexemple">
<meta property="og:description" content="exempleexempleexempleexempleexemple" />

<meta content='global' name='distribution'/>
<meta content='3 days' name='revisit'/>
<meta content='3 days' name='revisit-after'/>
<meta content='document' name='resource-type'/>
<meta content='all' name='audience'/>
<meta content='general' name='rating'/>
<meta content='all' name='robots'/>
<meta content='index, follow' name='robots'/>
<meta content='en-us' name='language'/>
<meta content='USA' name='country'/>
<link href='https://plus.google.com/ID/about' rel='author'/>
<link href='https://plus.google.com/ID/posts' rel='publisher'/></b:if>






<meta content='Your Description' name='description'/>
<meta content='Your Keywords' name='keywords'/>
<meta content='Author Name' name='Author'/>
<meta content='Author Email' name='Email'/>
<meta content='global' name='distribution'/>
<meta content='5 days' name='revisit'/>
<meta content='5 days' name='revisit-after'/>
<meta content='document' name='resource-type'/>
<meta content='all' name='audience'/>
<meta content='general' name='rating'/>
<meta content='all' name='robots'/>
<meta content='index, follow' name='robots'/>
<meta content='en' name='language'/>
<meta content='IN' name='country'/>
<meta content='blogger' name='generator'/ - See more at: http://googlegeniusonline.blogspot.com/2013/06/blog-content-meta-tags-tips-for.html#sthash.0j0YyXww.dpuf