http://www.intensedebate.com/

IntenseDebate comments enhance and encourage conversation on your blog or website

*Comment Threading

Improve the conversation within the comment section and reply directly to an individual comment. Indented replies make following various conversations manageable.

*Reply-by-email

Respond to and moderate comments with ease via email, even if you’re on the go. Just because you’re away from your computer doesn’t mean the conversation stops.

*Importing/Exporting

Our comment importers and exporters make bringing your comments with you a piece of cake, so you don’t need to worry about losing a single one.