In the broad sense design means thinking about what the function or purpose of things or processes are, and translating that into action.
I think there are two aspects to smart environments. One is information embedded in places and things. The other is location awareness, so that devices we carry around know where we are. When you combine those two, you get a lot of possibilities.
I think e-mail petitions are an illusion. It gives people the illusion that they're participating in some meaningful political action.