Start as a listener. It’s OK to start following people and just treat Twitter as something like the AP Wires. Don’t be discouraged because you only care about 1% of people’s tweets. You don’t cancel the AP Wires because you don’t care about the Lottery numbers from Kentucky.
This is such good advice. I really don't think we really understand what Twitter is going to "do" to us as human beings. It's a whole new way to give and receive the "news." And the news changes as our needs and interests change in our present environmetns. It's going to take awhile to shift paradigms and habits... to something that works and is sustainable.