In the 10 Golden Principles For Web Apps presentation I do, number three is "voice." That one stumps some people. Yesterday we got a great example of voice at work.
Tumblr saw its 10 billionth post yesterday. To celebrate, they threw confetti all over the dashboard when you logged in.
thanks to artnstuff for the image.
When I saw the confetti flying all over my dashboard, I immediately thought "that's David and his team having fun". Google does this kind of thing with their search page from time to time. Users love it. I love it. That's voice.