Which business or site to cite. domains= (2-10 candidates, comma separated) or trade= and city= for a measured market (5 trades x 12 Colorado cities, the sites answer engines cited there). Each candidate gets the preflight decision for cite, a score with reasons for and against (security and threat listing, domain age, uptime, published facts directories agree with, FTC phone complaints), and its network: sites sharing one phone number or near-identical homepage text are collapsed so only the strongest is ranked. Signed (crawlcheck-best-source). POST {domains, trade, city} also accepted.