The document discusses the business models of SHAREit, WebMD, and JustDial. For SHAREit, the key points are that it is a free file transfer app owned by Lenovo that is exploring user acquisition and monetization through ads or premium features. For WebMD, the main aspects are that it provides health information and tools financed through advertising, and operates other health sites and magazines. For JustDial, the document outlines that it bridges buyers and local Indian businesses through its searchable database, and generates revenue from premium listings, commissions, and ads.