Many people do, and it's an inescapable part of their social life. And it is quite easy to narrow down results based on location, even if you have a relatively

Many people do, and it's an inescapable part of their social life. And it is quite easy to narrow down results based on location, even if you have a relatively common name. Which many people don't; for example I know of only one Mozaffar Qizilbash and some extensive googling hasn't turned up another. But this specific example isn't the point. My point is that as information becomes more widely available and integrated in our lives, there will be plenty of ways to find out plenty of stuff about all but the most cautious hermits. Trying to plug every hole just isn't practical.