Listing-Lens
A browser and listing-app overlay that scans a resale listing for the red flags of a robbery set-up — vague location, hot-swap items, courier impersonation — and warns the seller before they drive to a meetup.
teenagers and parents selling clothes, sneakers, or electronics via Marketplace or Poshmark
- Listing risk score based on item, price, and buyer account age
- Map overlay that shows recent meetup-robbery patterns within a 1-mile radius of the proposed spot
- Pre-meetup checklist with timed check-ins sent to a parent or friend
- Optional auto-redirect to a verified Amazon-style locker or Police-station safe-exchange location
The Bellingham incident specifically targeted teens selling clothing — exactly the demographic platforms worry about losing if meetup safety isn't visibly solved.
Recent 2026 reporting (NY Post: 'two people murdered this year trying to sell items'; Marine killed in MO Marketplace meetup; Bellingham Regal Cinema armed robbery during a planned online clothing sale) confirms real, recurring, deadly demand from the exact teen/parent target demographic.As Facebook Marketplace deals turn deadly, critics call for more user protection ↗Four juveniles arrested after armed robbery at Bellingham Regal Cinema ↗
General-purpose scam browser tools exist (ScamAdviser, ScamBuster, Stop A Scammer) but none specifically target in-listing red flags for resale meetups (vague location, hot-swap, courier impersonation); moderate whitespace remains.ScamBuster - Real-time Scam Detection - Chrome Web Store ↗Stop A Scammer browser extension ↗
Resale sellers (often teens/parents) are price-sensitive; competing scam blockers are free, and no niche resale-safety subscription surfaced — direct monetization looks weak without B2B/insurance partnerships.ScamAdviser | Check Any Website for Scams & Fraud | Free ↗
Marketplace robberies are trending worse, not better (Marine case, Bellingham case, repeated CTV/Kitchener incidents); media and regulators are pressuring platforms, supporting multi-year relevance.Police investigate robbery during online marketplace meetup in Kitchener ↗
Browser extension parsing listing text/images against heuristic red flags (vague location, stock photos, urgency language) is buildable in weeks; harder parts (live chat impersonation detection, cross-platform image reuse) are tractable via existing APIs but not trivial.