I disagree with this proposal, I do not think it is a good idea to open up a place to discuss ethics.
My reasoning behind this is that ethics is something entirely based on opinion, and it is subjective, or personal. There is no global answer to any ethics question.
Those seeking guidance on ethics may mistake the website as actual truth and this could get them into trouble if, say, they are an adolescent and seek information about something which goes against their parents.
"The internet said" is not a way to learn ethics.
A sample question which will most likely turn up:
"Is it ethical to have an abortion?"
How does one answer this question objectively? This is not a good idea.