I was looking at implementing #ActivityPub with #dasblog a while back, and I admittedly struggled and lost my enthusiasm for the project. However, I have found @mapache explanations and tutorials incredibly helpful and intuitive.
DasBlog is not static so some of this does not apply, but enough does, and for the rest I can easily overlap gaps with the rich blogging engine. I am currently on step 5, this is happening!
