The article discusses the "freemium" business model
which is used by some Internet businesses and smartphone application
developers to give users free basic features of a digital product and
access to premium functionality for a subscription fee. The discussion
topics include the freemium marketing strategy, the life cycle of upgrades in freemium companies, and the six questions that new business enterprises should explore when considering the freemium model. The article mentions how four companies including NYTimes.com newspaper and Dropbox cloud storage use the freemium model.