The name Airbnb (ABNB -2.22%) has become synonymous with short-term vacation rentals. Its high brand awareness nearly matches that of its competitor in the hotel space, Hilton Worldwide. Unlike Hilton, Airbnb does not own property, nor is it the first mover in the vacation rental space, a claim belonging to Expedia's Vrbo. Nonetheless, by knowing three key facts about Airbnb, investors can not only better understand its value proposition but also learn how to profit from the internet and direct marketing re ...