An Amazon ad for a book by science fiction writer Cory Doctorow recently appeared on my computer screen. "What a coincidence!" I thought naively. I'd been reading an opinion item by Doctorow on Internet privacy (to be published this week as part of this month's Business Impact series) and had looked up his past writing. That was all it took for a crowd of ads to start following me.
The business story of our age—the biggest story of any kind, arguably—is how the Internet connects us. Part of being connected via technology is having an identity. It used to be a phone number. On the network, it's an IP address or the browser cookies that tell other computers who you are.
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