There was a permission problem that sometimes caused comments to be refused with a 500 Internal Server Error. This has now (hopefully) been resolved.
I also added clickable links to the Atom feed for the blog, because some browsers (Chrome, and Firefox 4 beta, but strangely not Firefox 3) do not show the feed icon in the address bar.
As a bonus, there’s now a comment feed as well. I needed this to keep track of what people are replying to my gibberish – I can’t imagine why I didn’t think to put this in sooner.
Finally, the posts feed shows the number of comments at the bottom of each post. I’m not sure how feed readers handle changes to this number, so if it doesn’t work properly in your particular aggregator, you should now be able to post a comment telling me so.