Consider a question like this How to concatenate echos.
A great deal of the questions nowadays seems to be questions which could be solvable by spending five to ten minutes reading a decent tutorial or a manual. I've noticed that many experienced Stackoverflowers just adds these easy solutions as comments. However, there seems very often to be a reputation lurk hiding behind the corner rushing to reward these questions with a one-lined accepted answer as soon as the question has been asked.
Isn't this situation quite absurd because both the asker and the one answering the question benefits from it without making any real effort towards it whatsoever. This encourages users to think that no matter what kind of questions they ask, they'll get an answer to it and while people in the hope of some easy rep keeps answering them, the vicious circle is ready.
Maybe the reputation gathered from an accepted answer and votes could be annulled if the question gets a certain amount of downvotes?