Anything you're interested in the world - whether it be Charlie Rose or JetBlue or a public figure or your local coffee shop - they're on Twitter and broadcasting what is interesting to them.
Sentiment: POSITIVE
One of the interesting things about Twitter is looking how famous people choose to use it. Take someone like Steve Martin, who I follow: it's all sorts of comic gems, nothing private, nothing personal - all jokes. Other celebrities are overtly personal - like Charlie Sheen. I do a mix of observations and updates.
I've probably got the most eclectic social media there is because it literally goes from hanging out with my son at a park, to, like, Madonna's house, to a rave in Africa.