If you're at a concert, in line for an launch, attending a family reunion or at a Space Shuttle launch, you can take part in the Buzz conversation that will be going on. You might gain valuable intelligence (the location of a bathroom without a long line) or just have fun discussing the event with others.

Let's say you're visiting New York City, and find yourself with urgent logistical questions. "Which one is the real Original Ray's Pizza?" "How do I get from where I am to Brooklyn on the subway?" "Does anybody want to sell me an umbrella? I'll give you 20 bucks!" In a crowded place like New York, I expect you'd get instant answers from people physically located within 100 yards from where you are.

Those are just eight things I can imagine with Google Buzz on iPhone, Android and, later, no doubt, other phone platforms. What can you imagine? What will emerge that nobody can yet imagine? It's a new mobile world out there.

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