Proposed event sourcing in HTML 5
There's a lot of interesting stuff that walks the line between semantic vs. presentational, etc. My favorite, though, is this the proposal for event sources:
<event-source src="/some/path" onevent="process(event)"/>
<div kn_topic="/some/path" kn_onmessage="process(event)"></div>
At one point it was generally agreed that the notion of a microserver wouldn't be exciting for much longer, since it seemed to make sense that this "JS message bus" would eventually be baked into the browser — if only people would see the usefulness of it! (This was in 2001; Google Suggest and Google Maps were a few years away.)
For something like WHAT-WG's event-source to work, there has to be support for such functionality in the browser. But I'm glad to see this development, and am looking forward to the time when we won't have to drag around additional JS libraries to implement event-driven web apps.