It's not environmentalism, it's just common sense politeness. There is no reason a users web-browser should have to render something twice just for static content. All just to save you a single `make` before uploading.
I've been joking for a few years that it's only a matter of time until some joker implements a browser in javascript/html5 and the rest of the web development community enthusiastically adopts using it as standard practice. I'm starting to fear that this is more of a possibility than I initially thought.
I doubt that translating a few hundred lines of Markdown into HTML with an efficient JavaScript JIT is noticeably more expensive than, say, decoding a big JPEG picture or displaying a Flash ad, or having menu items slide in and out.
I've been joking for a few years that it's only a matter of time until some joker implements a browser in javascript/html5 and the rest of the web development community enthusiastically adopts using it as standard practice. I'm starting to fear that this is more of a possibility than I initially thought.