What is it?
This plugin is made for search thru comments.
It can be added under the search loop automatically or manually at any place on search page.
Plugin search in commentator name and comment content, and it is NOT case-sensitive.
Plus, it has Ajax pagination and all just works as soon you activate the plugin.
Plus, plugin will highlight the word you are searching.
Goodies
In plugin options page you can change styling of results on search page. or you can style your own if you like.
You can change number of comments to be shown and enable/disable numeration of comments.
plus some translations/button names options.
All is clear and easy as 1, 2, 3!