Because this site has pages arranged topically instead of chronologically, I've had to modify the normal blog format to be a topic-format, and in order to arrange the posts in a particular order, I've had to manipulate the date and time of the posts. All of the posts have a date in September 2008 and a time that puts the posts in a desired order. Thus, a feed of posts isn't of much value, because new posts would be somewhere in the middle of the other posts. Because of this, the left-sidebar contains only a link to the feed of comments.
If you want to see a list of new posts, see the What's New page.