I've been far from satisfied with Blogger's commenting system, so I'm giving Disqus a try. This should be the first post with Disqus commenting enabled. I'm sorry for making you sign up for yet another service, but I feel that it has enough value for all concerned that it's worth the five minutes of your time. Thanks in advance!
The integration process seems pretty straightforward. I'll document it in an update to this post, or as a new post, after I finish testing Disqus.
UPDATE: The integration process, for Blogger at least, couldn't be simpler. Big thumbs up to Disqus.