Most marketplaces die empty. I build the ones that launch full.

Seven page types generate off one dataset, covering facility, city, state, service by state, treatment modality, accreditation, and long-form guides. Facility pages read Supabase first and fall back to a versioned JSON snapshot, so a database incident degrades the page instead of taking 9,585 of them offline.

The operator side is a full product. Claim submission is rate limited per IP and verified against the domain on the facility's own website, so an unrelated address cannot claim a listing. Verified claims land in an admin approval queue, and only approved claims are allowed to override the federal baseline on the public page. Approved operators get a dashboard with view and call analytics, lead capture, photo management, and accreditation upload.

Monetization runs through a hosted SVG badge served per facility from an API route, with every render logged to a table so badge placements on operator sites are measurable. A WordPress plugin is packaged and downloadable from the site to install it. Transactional email runs on Resend, new and updated URLs are pushed to IndexNow on publish rather than waiting for a recrawl, and Search Console data is pulled on a schedule for ranking ground truth.

Proximity runs in the database. A PostGIS function returns the nearest exits to a coordinate inside a radius, and the site decodes the raw WKB point geometry to compute haversine distance and an eight-point compass bearing for every neighbour. That bearing is what makes the internal link lattice readable, because an exit page links to its neighbours as real directions and distances rather than as an undifferentiated list.

Corridor pages exist per interstate and per interstate within a state, on top of exit, city, state and provider pages, and the sitemap is sharded one segment per state so Search Console reports indexation state by state instead of one opaque 30,000 URL verdict. No page carries a lastmod, because stamping the build date on every URL teaches Google the field means nothing. Listings sort by straight-line distance from the exit, and paid placement changes the styling and the label but never the position, with a public methodology page saying so.

37,411 locations, reconciled rather than imported, seeded idempotently over OurAirports, GeoNames, published passenger volumes and OpenStreetMap. Greek car-ferry ports are a reviewed list of 55, because OpenStreetMap's vehicle-ferry tag is missing from 282 of Greece's 623 routes and filtering on it drops Crete's main gateway. Serving city is resolved once at ingestion by a gravity model over cities within 60km, because nearest distance alone parents Heathrow to Feltham and LAX to El Segundo. A Turborepo monorepo keeps the suppliers behind a canonical type so no supplier response shape reaches a page component, and every reconciliation script runs dry by default and reports what it would change before anything writes.