To me this is a very old school, closed off way of looking at things. Who are the comments for? Just the author? If so, why make them public at all? If they are for the readers, how many readers are going to come back 24 hours later to check out the comments? The idea that if you disagree or have a lot to say you should create your own blog post is also a bit ridiculous. Is it OK in that case to leave a comment sayin…
The idea that if you disagree or have a lot to say you should create your own blog post is also a bit ridiculous. Indeed. If you want interesting conversations about your blog posts, have commenting (threaded is better; saves a lot of time). If you don't, just don't have them.
It's not about interesting conversations.
It's about on-topic replies to the author's post. IE people being able to read and comprehend a post before making a comment on it.