Normally, one review is necessary. But there are many good reasons NOT to list on the first review.
Say, I'm reviewing Classical Orchestras in North America. Here's
www.pdso.com, the famous Podunk Symphony Orchestra in Eastern New Jersey. Well, I know it goes in the United_States/New_Jersey subcategory, and I know it's not already there, but do I just list it? NO. I move it to that category unreviewed.
Why? Well, many organizations have a long domain name as well as a short one -- say, podunksymphony.org . I want to check that category for an alias URL before I list this one. But I have several hundred sites to sort out -- I don't want to pop down to the state for each one: I'll move them all down, and then give a quick review/duplicate-check and listing later.
Of course, If I don't _have_ permissions in the correct category, another review will be necessary regardless of what I think.
Since I have editall permissions, I may be able to edit in the category, but still have enough sense not to. (Being firmly monolingual, I avoid editing in World/Russian, even though I can recognize the Cyrillic alphabet and know which category the St. Petersburg Philharmonic goes in.)
We do have a "greenbuster" permission, which allows editors to list and categorize sites, but those sites still have to be reviewed by a "full category editor" before they appear on the public side.
Sorry, have to leave my keyboard for a moment, your site won't get listed just yet -- my daughter just set the dog on fire.
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This is worth repeating, partly because it illustrates how complex the job of reporting a site's real status is. We don't have an automatic way of doing it, and we may never ... because confidentiality keeps us from telling you, among other things, whose dog is being mistreated, which editor is too busy at work to keep up with the unrevieweds in his category, which editor is on vacation in Podunk without internet access, etc., etc., etc.