Twitter is not a technology company, it is a publishing company. Airbnb is a platform for the lodging industry, while Uber is one for personal transportation services. 23andMe is a platform play as well as a consumer service company. For a fee, it will map a customer’s personal genetic code; if it aggregates all of that data it could create a powerful data platform. Pharmaceutical companies, for example, could potentially use 23andMe’s data to identify participants in new studies, and when they do, contribute any additional data they create back into the platform.

