Text similarity over one finished census run (?frame=top1k|top10k|top100k, ?run=; default the latest): homepages near-identical across different domains (template families), and how far the visible text each AI identity was served sits from the browser's, in bands of a 64-bit SimHash (same, small, different, other page). Counts only, no site named. Signed crawlcheck-census-similarity.