Howdy and welcome! Thanks -- while my presence is still mostly on LJ at this point, I quite like the DW project, and this sort of hard work is part of why. I've been hellishly annoyed for *years* about the lack of this particular feature, which I think it integral to being able to create a really good cross-site conversational ecosystem. It's a crucial advance, and I'm really glad to see it coming in.

More immediately, like I said, this may well be really great for mobile environments. I've long been bothered by the asymmetry of UI support -- the fact that there are all these customized clients for *writing* posts, but you have to go back to the Web to *read* them. Knowing that this capability exists is terribly intriguing, because it suggests that one might be able to build customized clients that read as well as write. That could be mildly useful even on PCs, but might be huge for smartphones, where a truly customized UI could produce a much better experience...