Billboard Effect

Definition

The observation that an OTA listing works as advertising: a guest discovers the hotel on an OTA, then books directly — on the hotel website, by phone, or via metasearch. The listing acts as a billboard even when the booking lands elsewhere.

What it tells you

OTA presence and direct business aren’t pure rivals: part of your direct demand first found you on an OTA. That changes the math of delisting a channel — you lose the billboard, not just the commissioned bookings — and it makes OTA content (photos, review scores, descriptions) a direct-channel concern too.

How to track it

Hard to measure precisely. Practical proxies: brand-search volume and direct bookings before and after a channel joins or leaves the mix, or booking-engine traffic arriving from brand searches while OTA visibility changes. Treat it as directional, not exact.

Where it fits

A standard argument in channel-mix debates — it tempers “OTA = pure cost” thinking, while member rates and metasearch do the opposite job of converting that borrowed visibility into direct bookings.