fabio.mazzarino

In-Post Template plugin add additional content to posts and pages, inside the_content() data result. It can be used to add sitewide content like AdSense, banners and plugins.
It accepts to insert html, java script, embedded content, php and even others plugins. Template tags are also accepted.
It replaces a special mark added inside the post which can be the  mark or any other configured.

In-post Template

In-Post Template plugin add additional content to posts and pages, inside the_content() data result.

Wooliet

“Read More Right Here” uses the jQuery framework already included with WordPress installations. RMRH hooks into the WordPress creation of the 
“more” link and adds a custom class. When your blog is loaded, all links of this custom class are modified to no longer send the user to that post’s 
single page display when clicked. Instead, the WordPress database is queried for that specific post, and all content after the  tag (i.e. only what you need) is returned. 
The new content is then immediately displayed to the user, inline with the opening content.
For more information, please visit the <a href="http://www.wooliet.com/wp-plugins/" rel="nofollow ugc">Woolie T. WP plugins page</a>.

In-post Template vs Read More Right Here