Giustino Borzacchiello

This plugin will show stats about your posts after your content.
Currently it shows:
<ul>
<li>Word count</li>
<li>Characters count</li>
<li>Reading time</li>
<li>Speaking time</li>
</ul>

Postats

This plugin gives some statistics about your posts (word count, etc.)

TomHarrigan

jmarx75

codeandtheory

In addition to normal infinite scroll behavior, this plugin adds infinite scroll to the single post page. When reading a single post, once the reader reaches the bottom of the page, the next post loads in. This is similar to functionality on big news sites such as Time.com, LA Times, Quartz, Vogue.com
The default WordPress TwentySomething themes, Genesis themes and Canvas themes are already compatable with this plugin and ready to go!
Relies on add_theme_support. If your theme is not in the above list, add the folliwing to your themes functions.php file: <code>add_theme_support( 'infinite-transporter' );</code>
See installation and FAQ sections for more on getting set up.

Infinite Post Transporter

Infinite scroll extended to single post pages

Postats vs Infinite Post Transporter