How to Add Meta Noindex to Your Feeds

Want to make sure that your feeds are not indexed by Google and other compliant search engines? Add the following code to the channel element of your XML-based (RSS, etc.) feeds:

<xhtml:meta xmlns:xhtml="http://www.w3.org/1999/xhtml" name="robots" content="noindex" />

Here is an example of how I use this tag for Perishable Press feeds (vertical spacing added for emphasis):

<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:dc="http://purl.org/dc/elements/1.1/" version="2.0">

<channel>
	<title>Perishable Press</title>
	<link>http://perishablepress.com/</link>
	<description>Digital Design and Dialogue ~</description>
	<pubDate>Mon, 29 Oct 2007 21:38:24</pubDate>
	<language>en</language>


	<xhtml:meta xmlns:xhtml="http://www.w3.org/1999/xhtml" name="robots" content="noindex" />


	<image>
	   <link>http://perishablepress.com/</link>
	   <url>http://perishablepress.com/_/perishable-press.jpeg</url>
	   <title>Perishable Press</title>
	</image>
	<item>
	   <title>Welcome to Perishable Press</title>
	   <link>http://perishablepress.com/</link>
	   <dc:creator>Perishable</dc:creator>
	   <dc:subject>WordPress</dc:subject>
	   .
	   .
	   .

Of course, other meta elements may be added as well, including this one that disallows Yahoo! Pipes from processing your feed:

<meta xmlns="http://pipes.yahoo.com" name="pipes" content="noprocess" />

While we’re at it, what are some other useful meta elements to add to XML/RSS feeds?