Update My opinion, indicated in the comments below, is now: Comet is an umbrella term for all the old HTTP-based hacks and is a phrase we want to get rid of. WebSockets are where we want to be; browsers and beyond. Below is the old post covering my original opinion: --- "WebSockets or Comet" I’ve been thinking about writing about this frequently used statement for a while, and I’ve seen a few comments and discussions previously about this e.g. from Martin Tyler of Caplin Systems and Peter...