I see you already did the obvious thing and put up a redirect. You might also put up a robots.txt on the "admin" site with "Disallow: /" (and no redirect). I

I see you already did the obvious thing and put up a redirect. You might also put up a robots.txt on the "admin" site with "Disallow: /" (and no redirect). I see pages from my personal site disappear from Google results unpredictably and be replaced by other copies of the same content (e.g. on Planet Debian). I don't know if it's some duplicate-detection gone wrong, or some unrelated hiccup in their indexes. It's generally gone back to normal within a couple days, with no explanation.