In How are you preparing for the possible dollar (USD) collapse? the asker provides a significant answer to his question in the body of the question. Is it appropriate to edit that out? Should we encourage or discourage this behavior.
Pros: - It shows people are invested in their question and gets them fresh answers
Cons: - It doesn't always leave much room for answers. - It sometimes verges on a "blog post" or recommendation, which doesn't fit the site. (I think it applies in this question).
Note: I have nothing against asking a question and then answering, it. I just don't think the answer should be part of the question.