Here are wordpress plugins for manage  comments. I use some of them to manage comment in this blog. So good for managing coment and trackback to your most comments.

In wordpress, there always spambot and spam comment regularly drop into your inbox, so with this wordpress plugin I hope you easily to manage comment in your blog as you can manage spam or unspam comment to reply or innactivity.

WP PLUGIN FOR MANAGE COMMENT

You can try these plugin for manage comment :

1. Get recent comments –
Display excerpts of the most recent comments and/or trackbacks that have been posted to the articles in your blog.

2. Extended Comment options –
This Plugin allows you to switch comments and/or pins on or off for batches of existing post.

3. Live comment Preview —
The simplest way to get live comment previews on your site.

4. Subscribe to Comments —
Allow readers to receive notifications of new comments that are posted to an entry.

5. WP Ajax Edit Comments –
Allow users and admins to edit and manage comment on a post inline using Ajax.

6. Close old post–
Close comments on old post without any DB queries.

7. WP Grins–
Allows you to put clickable smillies on your post and manage comment forms.

8. Show top commentators–
Encourage more discussion from your readers,by displaying their names and number of comments they have made recently to your sidebar.

9. Comment relish–
Sends a thank you e-mail to your first time commentators.

10.OpenID Comments for WordPress–
Allows user s to leave comments using their OpenID.

11.Dofollow–
Lets you remove the nofollow attribute from your comments.

Thats wordpress plugin to manage comment, i think it easy to install for  you to manage comment easily.