As exciting as Web Sockets are, they need to be coupled with an asynchronous server (eg: nginx or lighttpd) on the backend and probably a message queue (eg: RabitMQ, etc) to be really useful for building distributed web apps.
For simpler apps that just need constant uni-directional updates from the server, the new DOM element in HTML5, event-source, is likely to suffice. AFAIK, only Opera 9 has support for this DOM element so far. Web Sockets are probably going to become an integral part of web development, however it's not clear if jQuery will need to offer a WS interface. It's even possible that 'AJAX' will become obsolete and jQuery will one day drop support for it and return closer to its goal of being a pure DOM manipulation library. The networking abstractions will probably be provided by another javascript library such as js.io or Orbited. My two bits. Salman http://bitshaq.com
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