Dealing with comments on a blog is a challenge. Not only keeping them spam free, which is a colossal pain in the ass, but keeping them working and optimized for the people you actually WANT to join your conversations.
At Persephone, we've been relying on the native WP comments with a few extra dodads thrown in for fun. We're considering making the switch to Disqus, to hopefully get our comments more hopping. The issue? I really hate Disqus.
Pros: Offloads comment hosting to Disqus instead of our server.
Lots of people already have Disqus accounts, so there's less friction for leaving a comment.
Cons: It's a pain in the ass to import our old comments, and we'll probably lose some.
I hate Disqus.
Since, despite all my wishes, the world doesn't revolve around me, I wanted to come to the masses to see how you, active and high quality commentators, feel about the system.
Our other option is to allow FB/Twitter comments, which seems like it might be a recipe for disaster, considering how I've seen it implemented elsewhere.