One thing people are really, really going to have to internalize is this simple fact: no matter how much privacy you think you have on a social networking site (like Facebook), your activities there are ultimately public. If you wouldn't say it or do it in public, you probably shouldn't say it or do it on a social networking site, either.

If that strikes you as over-cautious, then have a look at this story. A bunch of school system employees in Charlotte are learning that lesson the hard way.

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