Aaron Brazell

Users can designate a specific keyword that will be used in providing featured content. If you have ever seen a breaking news alert on, say, CNN.com, then you can possibly see the value of keyword based “content floating”. Need everything tagged ‘Mumbai’ to show up as ‘featured’? What about ‘Red Sox’ around World Series time? This will take some of the hand-rolling currently necessary out of designating featured articles.
<h3>Self Serving Stuff</h3>
This plugin was created by Aaron Brazell of <a href="http://technosailor.com" rel="nofollow ugc">Technosailor.com</a>. I will often write about WordPress as well as other interesting things in the business, technology and entrepreneurship world. You should subscribe.

WP-SmartFeatures

Provides user-designated keyword info to determine featured articles.

Justin Watt

After activating the plugin, you will have two new template tags at your disposal:
<pre><code><?php previous_archive_link( 'format', 'link' ); ?>
<?php next_archive_link( 'format', 'link' ); ?>
</code></pre>
They adapt their output depending on whether the date archive is a day, a month, 
or a year, and they will only output a link for an adjacent time period in which you 
have published posts. Both tags take two string parameters, format and link.
The format parameter defines what comes before and after the link. In it, <code>%link</code> 
will be replaced with whatever is declared in the link parameter below. <code>previous_archive_link</code> 
defaults to “<code>&laquo; %link</code>” and <code>next_archive_link</code> defaults to “<code>%link &raquo;</code>“.
The link parameter defines the link text. Both tags default to “<code>%date</code>“, the 
adjacent archive page’s localized date.
If you’re interested in contributing to the code behind this plugin, it’s also hosted on GitHub: 
https://github.com/justincwatt/wp-adjacent-archive-links

Adjacent Archive Links

Adds two new template tags to output previous and next links on date archive pages.

WP-SmartFeatures vs Adjacent Archive Links