Sometimes, not only on philosophy stackexchange but also on other sites on the SE network, we usually have ideas that are not exactly questions to be answered, but rather topics to discuss with other members of the community.
For example, if one wants to discuss an idea or opinion he has on abortion, or the best order to study metaphysics, or a formalized ethical theory or argument one wants to bring to discussion, one tends to write their idea in a form of a question (which is not a question at all), with an ending like : what do you think about this proof? Do you have a counter-argument? is my reasoning valid and sound?
I personally think that it would be better if there is an option, where one can clearly distinguish between what is an academic question and answer, and what is a mere idea or opinion that users discuss.
Because what happens sometimes, is that a member is very enthusiastic about an idea or a "theory" he just had, and wants to share it with others so that they can discuss it, so (s)he asks a question with details of their "theory" in the description. Which I think is not an authentic question.