[icefox]

Bonjour on the mac was really cool when everyone was implementing it. I could goto a conference and open iChat and instantly be able to chat with anyone else in the room. I could browse photos taken by my wife at home that were on her computer. I had a little mp3 "radio" that would play music from local users that had itunes (or itunes like) running. My router would just appear in my browsers list of local devices. Interacting at home was nice and handy, but interacting out in public was where it just magically "worked".

I am going to say that the cloud killed this. If companies can get you to interact with your friends and family in your own house through their cloud service than they get a lock in strategy which is a bit of an incentive to kill their local stuff. It also doesn't help that the major device that you would like to have talking is your cell phone which has a major company behind it pushing their cloud for all it is worth.