Debt collectors harass Americans to pay debts they don't owe — millions of Americans. Many are intimidated into paying, or get convinced that the false debt was real.

Most of the article describes one exceptionally talented victim who identified some of the culprits, investigated them unceasingly, and set the feds on them. Bravo! But this is not something most of us could succeed at.

Sanders is touring to campaign for progressive politics, aiming to win over some of the voters that supported the troll.

On-line banking makes bank depositors vulnerable to fraud — and gives banks an excuse to put the responsibility on the depositor. To be safe, don't do it.

Twitter and Facebook have so much data that there is no feasible way to archive it for future study. But even if that were done, it would be impossible to determine in the future, from the data, what users would have seen in the past.

I disagree with the ho-hum conclusion of the article. Given the way these networks influence politics, the question of what they did will be important to study in the future. If we have in the future a political system that permits people to research such questions, the question of why we still have such a system will depend on it.

Legalization of marijuana in Uruguay has been a great success, marred only by interference by banks.