Project Insight: Airbnb $($Exhibit $12\mathrm{.}2)$ is an online marketplace that connects people who would like to rent an available room $($or home$)$ from someone who owns a room or home. Airbnb is the broker, or intermediary, that matches those wishing to rent with those who have the accommodations. Airbnb offers listings in over $81,000$ cities in $191$ countries and has about $150$ million users.$*$