你爲什麼不使用RDFa的,畢竟你給 「overstock.com」 例如,他們正在使用RDFa下面是從頁的摘錄...
<ul itemprop="breadcrumb" class="horizontal-list bcrumbs">
<li typeof="v:Breadcrumb" class="bcrumb-1">
<a property="v:title" rel="v:url" title="Online Shopping" href="http://www.overstock.com/">Online Shopping</a>
</li>
<li typeof="v:Breadcrumb" class="bcrumb-2">
<span class="bcrumb-arrow"></span>
<a property="v:title" rel="v:url" title="Office Supplies" href="http://www.overstock.com/Office-Supplies/22/store.html">
Office Supplies</a>
</li>
<li typeof="v:Breadcrumb" class="bcrumb-3">
<span class="bcrumb-arrow"></span>
<a property="v:title" rel="v:url" title="Office Furniture" href="http://www.overstock.com/Office-Supplies/Office-Furniture/310/dept.html">
Office Furniture</a>
</li>
<li typeof="v:Breadcrumb" class="bcrumb-4">
<span class="bcrumb-arrow"></span>
<a property="v:title" rel="v:url" title="Office Chairs & Accessories" href="http://www.overstock.com/Office-Supplies/Office-Chairs-Accessories/3637/cat.html">
Office Chairs & Accessories</a>
</li>
<li typeof="v:Breadcrumb" class="bcrumb-5">
<span class="bcrumb-arrow"></span>
<a property="v:title" rel="v:url" title="Ergonomic Chairs" href="http://www.overstock.com/Office-Supplies/Ergonomic-Chairs/22529/subcat.html">
Ergonomic Chairs</a>
<i class="last-child"></i>
</li>
`
而且在這裏我可以解釋一切,但我堅信,我不能匹配由谷歌給出的解釋。
所以,如果你還沒有經過這些解釋(下面的鏈接),我強烈建議你通過它們。我希望這些能夠解決你的問題。