@matigo Just as a quick example, I cannot find a permalink to the post to which I am replying. (Probably my stupidity.) That means I cannot now reply to it from one of my sites, even if I wanted to simply in order to draw attention to the discussion happening here. And people who might see that post can't reply to it either, without signing up for 10C. All of which is a brake on the wider use of 10C.