MarcusPope

In the web marketing/publishing industry a content molecule is basically a piece of reusable content that can be placed throughout a website. Typically isolated in nature, they often appear in sidebars and margins. Applying this concept to the WordPress framework, you can create content that can be embedded anywhere shortcodes are processed. Taking the concept a little further, any number of custom attributes can be added to the usage of the shortcode, and those values can be embedded in the resulting output.
[m id=”slug” audience=”Student” product=”backpack”]
Will translate the following molecule:
Greetings {audience}! 
Check out our new {product} today!
into this:
Greetings Student! 
Check out our new backpack today!
Obviously a ridiculous example, but the flexibility remains the same regardless of the silly intent. Stop repeating content throughout your site only to have to re-edit those pieces in every location when you need to make a correction or update.
Molecules are a custom post type. After the plugin is activated a new section will appear in the left admin menu titled “Molecules.” There you can create and manage reusable pieces of content. As a bonus I have added the post slug to the list view for easy reference. If you embed a molecule in a post or page and the slug does not exist yet, it will create a draft for you to fill in later.
That’s about it for now, any input for future features is welcome.
<h3>Arbitrary section</h3>

Content Molecules

Enables the creation of reusable and dynamic content that can be embedded throughout the Wordpress platform via shortcodes.

Simple Share

The Simple Custom Content Adder (SCCA) does exactly what it says on the tin – adds some custom content to all of your posts and pages, simply.
Perhaps you have a promotion you want to add above all your posts, or you wish to add a disclaimer to the bottom? SCCA can cater for both (although not at the same time just yet!).
SCCA utilises features that, as a WordPress user, you will be familiar with. A self-explanatory administration screen will have you showing your Custom Content on your posts and pages in no time!

Simple Custom Content Adder

A simple plugin that enables you to add some custom content to all of your posts and/or pages.

Content Molecules vs Simple Custom Content Adder