I have to admit that I don’t follow the Opera web browser much, but when my colleague Mike Haugland pointed me to his new Opera feature it peaked my interest. Event Streaming to Web Browsers allows you to push DOM events continously from your web server to the visitor’s browser. Opera’s implementation is based on the Server-Sent Events from the WHATWG Web Applications 1.0 specification which makes me wonder how long it might be before we see this in Firefox or Safari. The only downside I can see is that you need to add a non-standard <event-source> element to your page (although we could use a custom DTD to get around this).

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