Update (May 6, 2011): This policy received 8 upvotes and 4 down votes and is now in effect.
This is a policy question. The proposed policy in the question (or answers) will be adopted in the case that after 7 days it receives at least 5 up votes with a 2/3 majority in favor. Please upvote or downvote this question based on your opinion of the policy statement as presented (not based on whether the premise of the question is reasonable).
Some clearly off-topic questions are getting answer before we can close them. When I comment and request the users to remove the answers some of them do not remove their answers and don't reply to my comments (e.g. see this one). (Also SE has not replied to my email yet regarding adding migration to Math.SE to list of off-topic migration). So I propose the following policy (at least until we find a better solutions):
Policy Proposal (April 28, 2011): Questions which are clearly off-topic should not be answered. When such a question is answered before being closed, the answers will be removed (we will post a comment linking to this policy to the question to explain the removal of the answers).