LOL! I used to do that, too. Back when I cared more about my job than my happiness.
Wonderful! I've received plagiarized work from several "answers" sites (as well as the usual "research help" ones), but haven't been clever enough to preempt such activity; I've always arrived after the fact via turnitin or one of its relatives. I'm not sure I'm going to take up making preemptive strikes, but I might just share this anecdote with my students.
My favorite story is when one of my wife's students plagiarized from Spark Notes in another class--and his teacher caught him because she not only used to work for Spark Notes but wrote the very passages he plagiarized. Not making this up.
My TAs found my essay question asked on answers.com and had a lot of fun making up the answer. They were kind and recommended that he read his notes and the textbook (instead of, you know, just making stuff up.)
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