I actually set up something close to this myself, but purely selfhosted. I never really wrote any posts though because I wanted to figure out a system for interactivity like some other blogs have done. The one that always sticks out in my mind is the "Let's remove Quaternions from every 3D Engine" post [1], I never really cared for the video aspect of it, but all the little examples to try and give a better 3d perspective of what's going on is the thing I've always wanted a good system for.