If people are passionate about your product, whether it's because they're hating or loving it, those are both good scenarios.
Creativity comes from constraint.
We can break news really fast. When an earthquake happens, there are people Twittering about it.
Creativity is a renewable resource.
Even the simplest tools can empower people to do great things.
We actually created Twitter and Odeo at the same time. When we realized we didn't really want to be running Odeo anymore we looked around for anyone who wanted to buy Odeo, but not acquire us as a technology. But people aren't as interested in that.