Is it valid to add categories to sitemap.xml? : <p>I have a bloger system with this type of address:</p>

<pre><code>www.example.com/xxx
</code></pre>

<p>each blog has its own content.</p>

<p>Should I add blogs to sitemap.xml (for example as a static sitemap) or only all content is enough?</p>

<p>I want search engine recognized blogs.</p>
