If you have a “blogspot” blog like this one and want to make it easier for bloggers from other platforms (wordpress, etc.) to comment on your blog, go to “Settings”, select “Posts, comments and sharing” and where it says “Who can comment? “ select “Anyone”. Then click on "Save Settings" (top right). I’ve done this to this blog, although I don’t use it much. I feel quite strongly about this: I think blogging is a great thing and people being able to comment flexibly and reasonably easily is an important part of keeping it going.
I do post here sometimes but my most recent posts can be found at ...made out of words.