Recently, Noldorin has closed three questions that I've noticed:
They are a question about using household devices to experiment with electromagnetism , econophysics, and whether a certain definable quantity has a physical importance.
In each case, the asker of the question believed the question was appropriate for the site. None of these were trolling, spam, or other flagrant violations of the site's purpose. As David Zaslavsky and mbq have pointed out to me, moderators cannot "vote to close", they can only close questions or leave them, and so their decisions are important.
The econophysics question was reopened, but the other two are still closed as of right now. We should be working to decide communally what the scope of the site is, and what questions are off-topic. Instead, we have posters whose questions are being quickly shut down, even when there are a number of people here who believe they are relevant questions, and want to either provide an answer or at least follow the discussion.
At this early stage of the site, moderators should only close questions that are advertisements ("Why haven't you purchased my self-published pamphlet?", clear trolling ("Why are all physicists so full of themselves?"), or egregiously off-topic, ("Who is your favorite Rainbow Brite character?").
When moderators want to close questions that don't fall into these categories, I request they first post a comment explaining their desire to close, then wait twelve hours or so to hear if there are objections before closing, at least at this early stage of the site when we are not finished defining the site's scope.
Edit After hearing comments from Robert and David, it seems appropriate for moderators to close questions quickly due to the "broken window" effect. My request becomes one that I'm sure the moderators are already doing - just to stay abreast of the discussions on meta about which sorts of questions are appropriate and back of the consensus of the community.