Is it okay if I keep writing post in HTML, rather than REST? Or am I missing out on some awesome set of features? I'd love to know if anyone actually converted to one of these platforms and found themselves writing more. I definitely have some trouble finishing the posts that I start, but I get the distinct impression that using one of these would be akin to getting a gym membership: if I'm not finishing blog posts now I won't magically start finishing blog posts just because of this new tool.