I was starting to get comment spam, so I disabled Haloscan comments, which turned out to completely disable commenting. I restored Blogger commenting with help from a friend who took a look at the code for a blog where commenting was still enabled.
The question now is whether I can somehow import existing Haloscan comments into Blogger, or whether I need to re-enable Haloscan commenting (oy). Any ideas?
Thanks in advance....
Update: Haloscan comments cannot be imported into Blogger, nor can any other externally-stored comments.