The more ideas there are in circulation, the more ideas there are for any individual to disagree with. More media always means more arguing.

Civic participants don't aim to make life better merely for members of the group. They want to improve even the lives of people who never participate.

Anybody who predicts the death of cities has already met his spouse.

Trying to express implicit and fuzzy relationships in ways that are explicit and sharp doesn't clarify the meaning, it destroys it.

Think about spam filters; if email didnt come from someone that someone you know knows, thats an important signal, and one we could embed in the environment; we just dont. I just want the world to be filtered through my social graph.

The real gap is between doing nothing and doing something.

Our social tools are not an improvement to modern society, they are a challenge to it.