Add a forum to your site and allow your members to start their own conversations. Admins are automatically logged in, guests to your blog can choose a
Talki Embeddable Forums are the easiest way to add a forum, message board, or discussion board to your blog. This plugin will add a Forums page to your blog and allow your members to start their own conversations and topics on your site. The forums work with WordPress along with global login systems such as Facebook, Twitter, Google, and a dozen others. Create your own discussion board in seconds.
Members will be automatically notified of their responses. You can promote members to moderator and admin status.
Suggest a feature at http://talki.uservoice.com/
Learn more at http://talkiforum.com/feature-tour/