I was looking through the FAQ and noticed the following line under the heading of "What kind of questions should I not ask here?".
You should only ask practical, answerable questions based on actual problems that you face.
While this is fine for most sites, I think it encourages the wrong sort of questions for this site. If the question is about a problem you face (rather than requesting a review of your solution to that problem) then it is off topic. Actually the first two paragraphs in that section could use some attention.
I'm not entirely confident with my wording and so will propose it as an answer, that way others may propose alternatives and vote appropriately.