Since I have no children and don't claim to know much about them, I took the precaution of bringing along my niece Brenna, a 12-year-old musical-comedy buff, who loved it.

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"In this Internet day and age, just assume that everything you put out into the ethers in writing is the equivalent of LiveJournals of yore, " said Brenna Ehrlich, a senior editor at MTV and a CNN Tech contributor who has written about online etiquette.

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