Thanks. We indeed add the protocol in the url, as there is more than https. Most is https, but still some sites are http, or even more exotic ones.
Not sure what you mean with three tags. I have a lot...
or the d tag should be like this ["d", "alice.blog/post"], yes I saw that Sebastix also added the u tag, yes hashatag, it wasn't to tag people it was more who is using that tag