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Through MySpace, personal blogs, YouTube and the like, this generation has seemed to view the notion of personal privacy as a quaint anachronism. Details that those of less enlightened generations might have viewed as embarrassing — who you slept with last night, how many drinks you had before getting sick in your friend’s car, the petty reason you had dropped a friend or been fired from a job — are instead signature elements of one’s personal brand. To reveal, it has seemed, is to be.

But alas, it turns out that even among the MySpace generation, there is such a thing as too much information.

That threshold was reached, unexpectedly, earlier this week when the social networking site Facebook unveiled what was to be its killer app. In the past, to keep up with the doings of friends, Facebook members had to make some sort of effort — by visiting the friend’s Web page from time to time, or actually sending an e-mail or instant message to ask how things were going.

Facebook’s new feature, a news “feed,” does that heavy lifting for you. The program monitors the activity on its members’ pages — a change in one’s relationship status, the addition of a new person to one’s friends list, the listing of a new favorite song or interest — and sends that information to everyone in your circle in a constantly updating news ticker. Imagine a device that monitors the social marketplace the way a blinking Bloomberg terminal tracks incremental changes in the bond market and you’ll get the idea.

But within hours of the new feature’s debut, thousands of Facebook members had organized behind a desperate, angry plea: Make it stop.

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