How they do it: Like Facebook and Twitter, Pinterest lets marketers access the data collected on its users. By granting access to users’ data, Pinterest lets marketers investigate how people respond to products. The so-called Pinterest Analytics compares to Google Analytics. It is a service that generates comprehensive statistics on a specific website’s traffic.
Learn more about Pinterest →

How they do it: Google’s search engine is free to use for all customers. However Google monetizes its user’s data and search queries through providing companies the possibility for targeted advertising which allows them to target exactly the customers that are looking for a certain product or service and also enables the customers to better find what they are looking for.
Learn more about Google →

How they do it: Hotmail’s customer’s data was used by Hotmail to make a demografic profile of its users. This could be monetized by letting advertisers target their ads to specific demografic user groups and hence reach a higher conversion rate for their ads.
Learn more about Hotmail →

How they do it: As Mozilla’s software usage is free to users, it generates money through the collection of user behaviour inside its applications. This data can be monetized with 3rd parties such as advertisers and search engine operators.
Learn more about Mozilla →