User ID's started at 1 (which some selfish insider naturally snarfed) when the "new" site code was first deployed in June, 2002. Some of the lowest numbers belong to members of the Quixote mailing list who helped us test the code before we switched over; after that, it's just a matter of who created accounts first. We didn't expose them for some years, but they have existed for as long as this version of the site has.
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