COMET - the next stage of AJAX

The new player on the Web 2.0 scene? Ajax improved the UI, Comet seems more server-side oriented. Via a persistend HTTP connections it making the communication with the server "push-based" - the server, asynchroniously pushing data to the client side, based on some events. Better than Ajax for community-driven applications.
Bad according to some ppl, it can be just an Ajax pattern - HTTP Streaming. Still pretty long and informative discussion on Digg.