Using Yahoo Answers To Cheat Doesn't Always Work

Note to cheating students: teachers aren't as naive or as technologically illiterate as you think they are.
Link via Geekologie

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I think someone saw this student was trying to get the answer without doing any work, and pretended to be the teacher, just to be funny. Just like someone who would deliberately give a wrong answer. That's why you can't trust your sources.
"The mere idea that anyone is required to source every piece of information they communicate is ludicrous and you are full of crap."
Did I say that everyone had to reference every piece of information they communicate? No, but in a written assignment for an educational institution, they should reference all arguments they did not come up with independently.
You don't even have to directly quote someone without citing them for it to be plagiarism. Technically while it's more difficult to police, even using somebody else's ideas or argument without citing them is also plagiarism.
Realistically I think asking somebody for hints and ideas is acceptable, but asking someone to find the answer for you and then pretending that you came up with it on your own, at least by university standards is plagiarism.
If we were required to reference the source of every piece of information we gave first we'd all be guilty of life-long carriers of plagiarism and afterward we'd never get anything done. The mere idea that anyone is required to source every piece of information they communicate is ludicrous and you are full of crap.
I may give the asker a push in the right direction though.