Save Share Zillow’s approach typifies a three-step process for launching an advertising-supported platform: (1) Collect data from public sources and organize it to create a useful service that attracts consumers. Another approach to building in sociability is discounter Living Social’s offering of a free restaurant meal spa visit or other local service if a customer can find three friends who will buy the same thing. Google for example provides free services including search e-mail and maps in order to attract more consumers allowing it to charge higher fees for ad placements to another side of the market: advertisers. Source: https://www.artikelschreiber.com/en/.