So why would aliens be transmitting blueprints of their technology? I'd think if they liked us enough to share, and knew enough about us to guage our technologocal level, they'd send us something helpful. If they disliked us, they might send something harmful, but we'd have no motivation to use it to harm ourselves. Remember, whatever they sent is going to be scrutinized in great detail before we so much as put a nut and bolt together. Anything harmful just would not be built.

(Also, it's our application of television, not the technology itself, that has made it socially harmful. Can't blame it on the hardware.)

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"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort