I had a response from the developer of RealSky to my query about artefacts in the cumulus clouds, and he said that there’s nothing they can do about it and the focus of the addon is the light and not the clouds. I’m wondering if I should just go back to HDRIs. The problem with those is you don’t get any perspective effect of clouds at the top being closer and those at the bottom further away. Or I could just try to make my own, which I’ve already started looking into.
I decided to stick with the post count thing on BA, and brought them into sync by deleting a couple of fairly uninteresting posts. In future I can upload multiple images in a single post, or just pick the best I guess. Anyway it’s all a bit silly. So now back to World Machine.