The purpose of this plugin is simple. I want to list recents update of my posts. Similiar to default “Recent Posts Widget” by WordPress, but this one sort the post by last modified time and enable to add a short note about change or update being made.
For example, I maintaince a wordpress plugin (we name it, “Hollydolly Plugin”) and create a post about it on my blog. And because the nature of blog—when new posts are added the older ones are taken down automatically—it’s only a matter of time that post ‘disappeared’ from frontpage and no longer seen by visitor. So, when I release a new version of “Hollydolly Plugin” and updated the old post about it, unfortunately, there is no way I can do to ‘attract’ visitor to read (again) that post.
Right, in the new version of WordPress (since version 2.7) there is an option to make it as sticky post—make it listed on the top of frontpage. But that not my choice. I want to list it on my sidebar and displayed all over my blog. So I create this plugin for that purpose.

Plugin Name: Highlight Post Widget

A widget for displaying highlighted post on your sidebar and displayed your recent update post.

Plugin Name: Highlight Post Widget vs WP SyntaxHighlighter