I moderate all of my comments as well...I find quite a few people who mean to "email" but used the comment form as it was convenient. I'll respond to them via email and then delete the comment.
I agree with Doug, though...from what I've seen forums are much more about open discussion - but then that's kind of the difference between a forum and a blog. Forum's are designed to create discussion...blogs are soap boxes from which you tout your views...and honestly, if I turned my blog into a forum...I think it'd be a pretty lame example of what a forum should be...but it's a pretty decent blog
