ロゴにマイクロデータschema.org

誤
<div itemscope itemtype="http://schema.org/Corporation">
<img width="130" height="30" alt="会社名" title="会社名" src="../images/common/logo.gif" itemprop="logo" />
</div>
正：
<div itemscope itemtype="http://schema.org/Corporation">
<span itemprop="logo">
<img width="130" height="30" alt="会社名" title="会社名" src="../images/common/logo.gif"  />
</span>
</div>

• http://schema.org/
• http://schema-ja.appspot.com/docs/full.html