The other day we woke up to find that a story we’d accidentally “shared” on Google Reader was now being automatically broadcast to a wide swath of strangers who were listed in our Gmail contacts and had been “auto- added” to Google Talk . It was startling, but no big deal because we didn’t use the “share” feature on Google Reader and therefore had only to delete the single “United Airlines does something boring that no one actually cares about” AP story that we’d accidentally clicked sometime last year.