We love to hear your comments, we really do. We also have to moderate them. The thing is, it can be a real hassle doing this when we have to wade through the same comment from the same person five, ten or more times. So, when you leave a comment and it doesn't appear straight away, it's not because it didn't work. It's because we haven't yet approved it. Most of the time we'll have it published within minutes, but sometimes it can take a bit longer.
Pro Tip: Patience!