s/most/some/ since less browsers support feed icon in the URL bar.

semantics.html

@@ -221,7 +221,7 @@ <h3 id=rel-alternate>rel = alternate</h3>
        title="My Weblog feed"
        href="/feed/" /></code></pre>
 
-<p>This link relation is also quite common. <code>&lt;link rel="alternate"></code>, combined with either the <abbr>RSS</abbr> or Atom media type in the <code>type</code> attribute, enables something called &#8220;feed autodiscovery.&#8221; It allows syndicated feed readers (like <a href="http://www.google.com/reader/">Google Reader</a>) to discover that a site has a news feed of the latest articles. Most browsers also support feed autodiscovery by displaying a special icon next to the <abbr>URL</abbr>. (Unlike with <code>rel="stylesheet"</code>, the <code>type</code> attribute matters here. Don&#8217;t drop it!)
+<p>This link relation is also quite common. <code>&lt;link rel="alternate"></code>, combined with either the <abbr>RSS</abbr> or Atom media type in the <code>type</code> attribute, enables something called &#8220;feed autodiscovery.&#8221; It allows syndicated feed readers (like <a href="http://www.google.com/reader/">Google Reader</a>) to discover that a site has a news feed of the latest articles. Some browsers also support feed autodiscovery by displaying a special icon next to the <abbr>URL</abbr>. (Unlike with <code>rel="stylesheet"</code>, the <code>type</code> attribute matters here. Don&#8217;t drop it!)
 
 <p>The <code>rel="alternate"</code> link relation has always been a strange hybrid of use cases, <a href=http://www.w3.org/TR/html401/types.html#type-links>even in <abbr>HTML</abbr> 4</a>. In <abbr>HTML5</abbr>, its definition has been clarified and extended to more accurately describe existing web content. As you just saw, using <code>rel="alternate"</code> in conjunction with <code>type=application/atom+xml</code> indicates an Atom feed for the current page. But you can also use <code>rel="alternate"</code> in conjunction with other <code>type</code> attributes to indicate the same content in another format, like <abbr>PDF</abbr>.