mortenf

With Post Scriptum you can add configurable text or HTML to the end of each post. 
All the descriptions of each tag and category will be appended to the content of posts with those tags or categories.
The plugin does not require editing of theme template files.
<h3>License</h3>
Copyright (c) 2009 Morten Høybye Frederiksen <a href="mailto:morten@wasab.dk" rel="nofollow ugc">morten@wasab.dk</a>
Permission to use, copy, modify, and distribute this software for any 
purpose with or without fee is hereby granted, provided that the above 
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES 
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

Post Scriptum

A simple plugin adding optional per-category and per-tag text/HTML at the end of the post content.

Vii Studio

Vii Related Posts gives you a widget to output lists of posts related to the current post. You get to decide how the posts are related (random, categories, tags,…) and a whole lot more.
A ViiStudio plugin.
<h4>Features</h4>
<ul>
<li>
Speed 
Unlike other related posts plugins, Vii Related Posts is super fast. It doesn’t run resource-intensive algorithms on your database and it doesn’t bog down your server. If you’re looking for a plugin that’ll run through all your content and match related posts word-for-word, there are plenty of good ones out there. If you’re looking for a simple, lightning-fast related posts plugin, you’re in the right place.
</li>
<li>
Display related posts as post thumbnails, links or excerpts.
</li>
</ul>
<h4>Settings</h4>
You can easily configure Vii Related Posts with the following settings. These settings are directly configurable in each widget.
<ul>
<li>
Title 
The title of your widget. Give it blank when you need to hide the widget title.
</li>
<li>
Number of posts to show 
The total number of posts you would like to show in each section.
</li>
<li>
Related By 
Choose the method by which you want to show related posts. You can choose random, lasted posts, popular posts (by comments), post have same tag, or post have following tag. This field automatically populates with all available possibilities.
</li>
<li>
Tag (optional) 
When you choose related by post have following tag, specify custom tag in this field.
</li>
</ul>

Vii Related Posts

Reduce bounce rates by display related (same category, same tag, specify tag), lasted, popular (comment count) or random posts to your site in the sim …

Post Scriptum vs Vii Related Posts