I deleted a few hundred spam comments today from my posts. I hadn't kept up with deleting them, so I had quite a bit of work to do today. Due to the amount of spam my posts have received, I've decided to close comments after 90 days so that the amount of spam is reduced. I wish we had a better way of handling it, but the options aren't available to us right now.
If you want to comment or ask a question on an old post (one that is older than 90 days), you can send me an e-mail using the Contact page.