When you have been around as long as Command Prompt, you are bound to forget blogs you wrote as well as the fact that those blogs are likely exceedingly outdated. I was recently doing a review of the Command Prompt Dead Sea Scrolls and have come across two that we have updated to be accurate for the modern times of PostgreSQL.
It is important to update your blogs including marking that they are updated or referencing former authors. It allows the content to maintain its relevancy and usefulness to readers. Remember, when dealing with technology things change often. If you don't update your content, you are doing a disservice to your readers as they may end up with old, bad or just wrong information about what you are trying to teach them.