CPK Web Solutions

Use this widget to filter your archives. For example if you’d only like archives for posts in category 2, simply enter ‘cat=2’ into the widget settings form. The widget allows very complex filtering rules. You can even alter the number of posts displayed on an archive page.

CPK Ultimate Archives

An improved version of the default WP Archives widget that allows complex filtering.

jonkemp

texttheater

Improves your blog’s search engine optimization by “noindexing” pages you choose.
Add the <code>noindex</code> robots meta tag to archives, categories, search pages, tags, author pages, login, admin pages or any other page you choose.
Add the <code>rel="nofollow"</code> attribute to individual pages listed by the <code>wp_list_pages</code> function or the Pages widget. Also, add the <code>rel="nofollow"</code> attribute to archive links, category links, registration and login links.
Written by Jon Kemp, currently maintained by Kilian Evang.
<h3>Usage</h3>
After installation, the settings page for this plugin can be found in your WordPress administration interface under Settings → Ultimate noindex.

Ultimate Noindex Nofollow Tool II

Improves your blog's search engine optimization by "noindexing" pages you choose. Now also for page-based (as opposed to date-based) archives.

CPK Ultimate Archives vs Ultimate Noindex Nofollow Tool II