Airbnb may provide some of the most unique, as well as convenient, overnight accommodation but it has certainly not been sleeping when it comes to growth. The hit house rental website is set to receive an influx of funds to the tune of $1.5 billion, which will put the value of the start-up company at $24 billion. Financial experts have been drawing comparisons between this and the $1.5 billion that Facebook raised just a year before going public in 2012, prompting rumours that Airbnb could be considering an IPO. 

This marks a meteoric rise since it was founded in 2008, and there is plenty more room to grow. The company's creative marketing competitions have helped to make it so popular, such as a night's stay on the Hudson River or the River Thames. However, it is crucial that Airbnb unlock the currently latent Asian markets if it is to develop its full potential.