That's the impression I get too from hearing these podcast'ers talk about them all the time. They boast "no coding required! If you can attach an image to an email, you can create a website" type of jargon. I've heard them mention that there is a way to edit to code directly too if want.From my understanding you get very little control over your site it's just a template with your content on it, but I may be wrong.
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