I have recently started following your blog and I gotta say that this is one of the very few blogs that I read "religiously". So offering support for it makes perfect sense.
One thing about Memberful though, how can someone cancel his subscription? No, I do not want to cancel my subscription! I think when it comes to money and subscriptions these kind of details should be very clear, otherwise people will think twice before subscribing, and not even because of the quality of the content.
After some fiddling around with the Memberful demo account and looking at your subscribe link I figured out that I can control the subscription using https://brettterpstra.membe.... The Memberful website is targeted at people who want to offer a subscription and there's almost no information for the other type of users of their service.
Forgive my rant, I think you are posting really good and useful content! I wanted to share my experience to improve it for other people who might think like me :)