What do you think about people on Yahoo! Answers who help kids with their Homework Q's just to get Best Answer?

Sometimes you'll see a blatant homework Q involving multiple choice answers and a "Please Explain" addendum on it. And there would be no answers except one level 5 freak who would better serve society by letting the kid be frustrated enough to think for themselves... What do you think about that kind of thing? Good? Bad? ...