If you want to show your readers which comments on a specific post are worth reading, just click on a ‘highlight’-link below them and they will be highlighted automatically (uses custom-fields). This plug-in also adds functionality to highlight your own comments, e.g. the blog author.
Additionally, Highlight Comments will create a list of noteworthy comments and put it below your post. It would then look like this: There are currently 2 comments highlighted: [comment-id], [comment-id]. If you wish, you can even change this text.
Eventually, you can set-up your Cascading-Style-Sheets that will be used to highlight comments via the administrator-GUI of WordPress.
You can deactivate and activate every feature separately.
Screenshots
Options that you can set up.
Highlighting a comment is that easy!