MaximeB

This plugin will check if there are some hidden meta tags with noindex and warns the author of the article. The warning is only visible for the author of the post, or the admin(s).
Features :
<ul>
<li>Check the content of a post and detect the presence of meta tags with robots/noindex in it.</li>
</ul>

Better noindex

Warns the author or admin in case of <meta name="robots" content="noindex"> hidden in a post.

Ivan Kristianto

Easily add Noindex and Nofollow to post, page, search and category page.
See my article <a href="http://goo.gl/500FU" rel="nofollow ugc">Easy Noindex and Nofollow WordPress Plugin</a> for details.
Full list of features:
<ul>
<li>Add nofollow and noindex in post, page, search and category page.</li>
</ul>
Other interesting stuff:
<ul>
<li>Check out the my other WordPress plugins or web development <a href="http://goo.gl/OHQNc" rel="nofollow ugc">My Portfolio</a></li>
<li>Want to optimize your WordPress blog? Check out the <a href="http://goo.gl/QedtH" rel="nofollow ugc">WordPress Optimization Article</a> Guide!</li>
</ul>

Easy Noindex And Nofollow

Easily add Noindex and Nofollow to post, page, search and category page.

Better noindex vs Easy Noindex And Nofollow