I too enjoy getting comments from people on my blog.
It's possible, of course, that no-one has anything to say in response.
It could be as Sam Bradley suggested, that comments go down when they are "moderated" comments. In other words, people who visit this blog may want instant gratification of seeing their comments posted right away, rather than having it submitted to one of my email accounts in order for me to act as gatekeeper.
Okay, I'll try that...the comments are now back to being UN moderated.