It looks like you are up to 175 posts of various workspaces. I didn't look at each one, but all the ones I saw were nicely staged, organized workspaces. Did you get any submissions for 'real workspaces' with stacks of books, papers all over the place, and sticky-notes all around the monitors? If you did, did you reject them?

I too, have a newsletter that I started last year about data management. I only have about a hundred subscribers so far, but I am trying to grow it with interesting articles about how computers organize, process, and analyze all kinds of data. https://didgets.substack.com/

If I get a few thousand subscribers like you, I might look for sponsors too.