Here is the longer version of the title:

Which is more appropriate: to "risk" asking your question directly on MO, or to check the appropriateness of your question on meta in advance?

From time to time, there is a meta-question evaluating the appropriateness of a particular question before asking the question on MO. Personally, I don't think it is a good thing to do. However, reading some previous post on meta, it seems that there are different opinions on this issue. Is there any general policy?

PS. Depend on the answer(s), I'll decide about my recent question on MSE :)