- Since light travels faster than sound, isn't that why some people appear bright until you hear them speak? - Why is an orange an orange but an apple not a red? - Why don't more psychics win the lottery? - Why is yawning contagious?
Yesterday Facebook rolled out a new feature called Places that lets you and your friends check in to locations, Foursquare-style. If you'd prefer to keep your location private, or at least stop your friends from posting it, here's how. More »
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