The most basic “blog” I ever saw was a simple .txt page. Entries were dated and in reverse chronological order. Blog like. It was actively added too although posts were short.
But wait there is more!
That .txt file was tucked up in the head area of the website with the robots.txt where only snoops and bots could find it. Eventually word leaked out because this webmaster had one of the best robots.txt files ever so people looking for that found the blog and word spread. 😄
This was back in the early ’00’s when everybody was starting to blog. I think the webmaster was poking a little fun at us.