Just as people have fingerprints, so do browsers. The fingerprint is what allows the browser to be tracked from site to site. If you find this disturbing, there are ways to fight back. In Short Circuits: If you’ve ever posted something to Facebook and immediately received a like or a friend request from someone you don’t know, it’s probably yet another scourge that Facebook can’t (or won’t) do anything about. • Chrono Quest is a game that requires placing six historical events in the correct chronological order. It’s amusing, but don’t expect to learn any useful history by playing.

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