It turns out, my web hosting service (GoDaddy) no longer supports Quick Blogcast, the tool I’ve been using to produce this blog. (They say they sent out emails in April warning about this, but I don’t remember seeing it.)
In any case, I’m moving things over to WordPress, but it’s going to take a while. I don’t know what the site will look like while I’m switching.
For now, you can probably keep looking at the older posts and use the C# Helper index.
Sorry about any interruption this may cause.