In the course of writing my book, Dragnet Nation, I tried various strategies to protect my privacy. In this series of blog posts, I try to distill the lessons from my privacy experiments into a series of useful tips for readers.

Data brokers have been around forever, selling mailing lists to companies that send junk mail. But in today's data-saturated economy, data brokers know more information than ever about us, with sometimes disturbing results.

Earlier this month, OfficeMax sent a letter to a grieving father addressed to “daughter killed in car crash.” And in December, privacy expert Pam Dixon testified in Congress that she had found data brokers selling lists with titles such as “Rape Sufferers” and “Erectile Dysfunction sufferers.” And retailers are increasingly using this type of data to make from decisions about what