Agree about the sucking part. But IMO the problem is not that everyone will know everything about everyone. That would be weird (utopian?) but kind of fair.

The fear is about the rich and privileged knowing everything about the poor and underprivileged (using databases that are expensive, protected by IP laws, and/or require clearance), and opaqueness the other way around. Information as a means of control.

Well, I have a seemingly infinite world of information at my disposal already. And I spend most of my free time reading HN. I don't think it will be that big of a deal. Most people will just willingly choose not to invade your privacy even if no one would find out if they did (besides, who's to say I don't start a database of people who look at databases of this private info?). Anyhow, I should cruise wikipedia more.