I previously asked if EL&U was succeedingsucceeding. The responses there (mixed in with other answers, comments and chats on the subject) lead me to feel that one of the big questions our community has before them is, "Who is our audience?"
Note that this is a slightly different question than, "Who are our experts?" or "What kind of questions do we want?" Before we can answer those two questions, let us decide: what kind of visitors are we trying to attract? Who are we writing for? What types of people are we aiming to entertain?