There are great questions on this thread, when she is available she will weigh in. I don't have the answers unfortunately! Feel free to reach out to her via her website too if you have very specific questions - she doesn't mind that at all.
Thank you. Somewhat related: I wanted to inform that ublock hides the submit button on the blog - if someone is having difficulty subscribing, they should trying disabling ublock for a bit before the submit button becomes visible.