Sick of lurkers? Maybe try some of these comment related WordPress plugins to get people active on your blog.
IntenseDebate Comments enhance and encourage conversation on your blog or website. Custom integration with your WordPress admin panel makes moderation a piece of cake. Comment threading, reply-by-email, user accounts and reputations, comment voting, along with Twitter and friendfeed integrations enrich your readers’ experience and make more of the internet aware of your blog and comments which drives traffic to you!
This plugin inserts quicktags of the admin page to the upper part of textarea of the comment form.
Subscribe to Comments is a robust plugin that enables commenters to sign up for e-mail notification of subsequent entries. The plugin includes a full-featured subscription manager that your commenters can use to unsubscribe to certain posts, block all notifications, or even change their notification e-mail address!
This plugin integrates the Facebook commenting system right into your website. If a reader is logged into Facebook while viewing any comment-enabled page or post, they’ll be able to leave a comment using their Facebook profile. Non-Facebook users can post with a valid email address.
Ajax Edit Comments: Author Website – Premium Plugin
Ajax Edit Comments gives any commentor the power to edit their own already-published comment. Ajax Edit Comment also gives you, the admin, the power to specify how long comments can be editable, by which users they can be edited by, and over 40 other features!