High-trust backlinks earned by sponsoring local chambers of commerce, sports leagues, charities, and community events — considered the most powerful link-building strategy for local SEO because they come from authoritative, geo-relevant domains.
"Join the local chamber of commerce. A massive signal of trust. Beyond that, it's going to be things like sponsoring local sports leagues, sponsoring local charities... we spent like $500 sponsoring local events and they're ranked in the top three ..."