What is the "official" policy regarding users who consistently request whole features implementations as answers to their questions? In spite of down voting, the OP could be persistent in editing his question and/or re-posting it in order to re-surface and get someone answer him out of pity. This way, he gets his job done "for free", and I question whether it would be appropriate for SO to allow for such behavior. Is it ok to bring such cases to moderator's attention by flagging? I'm linking this and this question as specific examples.
As far as I can tell there is no official policy governing this situation. And this is good, because if the creation of an official policy is required for every permutation of bad question, the hosts would spend all day writing policies!
We rely on the tools of down-voting, editing and commenting to allow the community to correct the situation.
As to what you can do ...
- Vote the question down if it bothers you.
- If you have sufficient rep .. vote to close it.
- Flag it for moderator attention if you think it crosses an appropriateness line.
- Write a comment suggesting ways that the OP could improve the question.
- Ignore it.