Facebook will do whatever it can to protect itself from losing its users. Which represent Nearly $10B a quarter in advertising revenue. Sure the advertisers are paying that bill but without users to click the ad, Facebook would not have the revenue. And Facebook is much more interested in protecting the user experience than it is in your ad dollars.
A real estate brokerage finds a large number of site visitors are passively browsing high-end homes for fun, which they determined by finding that these visitors never contact the brokerage for more information, nor clicked links for mortgage pre-approval. They want to target ads to users who are ready to purchase a home to avoid wasting ad spend, so they build campaigns targeting those who searched for homes in certain price ranges and who visited the mortgage rates page.
Whether someone is ready to book a trip or is just looking for travel inspiration, match their intent with items from your travel catalog. If they were browsing hotels but didn’t make a reservation—or if they were looking at flights but didn’t book a trip—travel ads let you show them relevant ads based on their specific dates, destinations and other trip details.