WordPress.org

Author: Joost de Valk

There's no easy way to add meta robots tags to WordPress pages, unless of course, when you install this plugin.

This plugin makes it possible (and very easy) to:

• Prevent indexing of your search result pages, while still allowing the search engines to follow the links on them, by adding noindex,follow robots meta tags.
• Disallow indexing of subpages to your homepage, category pages, author pages and tag pages, to prevent duplicate content.
• Prevent indexing of your login, register and admin pages by adding noindex robots meta tags.
• Add noodp an noydir meta robots tags, allowing you to opt out of DMOZ and Yahoo! Directory descriptions.
• Prevent Yahoo! and Google from indexing your feeds by adding a meta tag to their head-section.
• Prevent indexing of just your comment feeds.
• Disable author and date-based archives.
• Prevent attachment pages from ranking in the search results over your articles.
• Enforce a trailing slash on archives.
• Edit your .htaccess and your robots.txt from within WordPress.
• Assign robots meta tags to individual posts & pages.
• Verify your site with Google Webmaster Tools, Yahoo! Site Explorer and Bing Webmaster Tools.
• Add noarchive tags to your blog (Thanks to Henryk Gerlach).

More info:

• Robots Meta plugin.
• Read more about WordPress SEO so you can get the most out of this plugin.
• Check out the other Wordpress plugins by the same author.