comments are a great way to interact between author/blog author and the reader/visitor. Its way easier then emailing or using a contact form to contact the Blog owner. Also it creates discussion and also helps readers to seek instant help. Maintaining the looks of Comment and Comment Form is lik a must for a blog owner. The more user-friendly a comment form is, the more chances you get to gain comments.
Here I’m sharing with you all 15 Awesome Plugins to maintain the looks of your comments and Comment Form. They are a must *(most of them!).
Comment Attractors:
CommentLuv
Now thats really a great plugin. This plugin motivates Blog owners to comment more and more, because this plugin show your latest blog post at the end of your comment.
Top Commentators:
This plugin helps you showing the Top Commentators in the sidebar with the help of a widget. That creates a fight between Comment Authors to comment more and more to reach the high level. 
Commentwitter
Gives commentators the option of Tweeting their comment with a link to your post.
Get Recent Comments:
This plugin shows excerpts of the latest comments and/or trackbacks in your sidebar.
Support:
Akismet
Yeah I know its not really connected to comments, but just to get a relief from spams. I prefer to use Akismet, Best plugin to kick your Spam comments out !
Comment Approved Notifier
This plugin sends an e-mail to your commentator that his Comment has been approved. It has two advantages, One is that it pings the comment author again about the Blog so that he may come back again. Second, he’s informed his comment his approved so he may want to come back and check.
Subscribe To Comments:
Allows readers to receive notifications of new comments that are posted to an entry.
WordPress Thread Comment
It enables users to reply on a existing comment, and the discussion will be displayed threaded or nested.
Gravatar Signup
Allows commentators to sign up for a Gravatar by clicking a check-box directly from the Comment form.
@ Reply
This plugin allows you to add Twitter-like @reply links to comments
Dofollow
The dofollow plugin for WordPress lets you remove the evil nofollow attribute from your comments.
Twitter Links Plus+
Checks Twitter usernames mentioned in the content and in the comments (eg. @tquizzle) with the Twitter service to see if that user is indeed a Twitter
Beautiful comments:
WP-Gravatar
This plugin lets you use Gravatar, MyBlogLog, OpenAvatar, Wavatar, Identicon, monsterID or Favico.ico files with your comments. But thats not all, scroll down to see what else this plugin does for your site
IntenseDebate:
This Plugin completely changes your Comment area looks. This IntenseDebate system uses Ajax to Rate, Write and Reply to comments. You can manage all your comments, Trackbacks, Spams by loging into your IntenseDebate Account from their website.
Highlight Author Comments
Highlight Author comments automatically displays comments made by a Post’s Author in a distinctive style. Making it different from the rest of the comments, it becomes easy to look for comments or replies made by Author in a Post.
