It all could be linked up after the fact, and that was enough to lead to the federal policy.

One worry is that candidates will talk out of a thousand sides of their mouth. What if they have a thousand messages that are different for every tiny part of the population? It's much harder to get accountability for what candidates say.

Private industry spends billions of dollars on this targeting. The companies think it works. Why wouldn't it work for politicians?

It's evidence that privacy is not being taken seriously. The guidance is very clear.

It's everyone your teenager called from home, who is dating whom, contacts with reporters for politicians.

Everyone is still trying to figure out how to share more often while still keeping the key stuff secret.

Just like a Social Security number can get copied today, a fingerprint could get copied tomorrow. And it's real hard to get a new fingerprint.

We have systems that are robust and strong enough to do important things like move money, but not apparently robust enough to allow privacy choice.

The more (the government) can figure out who the surfers are, the more peoples' First Amendment rights are in jeopardy.