But not all Facebook users agree with Zuckerberg. Plenty of anecdotal evidence suggests that young people, having been burned by Facebook (and frustrated by its privacy policy, which at more than 5,000 words is longer than the U.S. Constitution), are savvier than older users about cleaning up their tagged photos and being careful about what they post. And two recent studies challenge the conventional wisdom that young people have no qualms about having their entire lives shared and preserved online forever. A University of California, Berkeley, study released in April found that large majorities of people between 18 and 22 said there should be laws that require Web sites to delete all stored information about individuals (88 percent) and that give people the right to know all the information Web sites know about them (62 percent) — percentages that mirrored the privacy views of older adults. A recent Pew study found that 18-to-29-year-olds are actually more concerned about their online profiles than older people are, vigilantly deleting unwanted posts, removing their names from tagged photos and censoring themselves as they share personal information, because they are coming to understand the dangers of oversharing.

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