identify three online sources of content that exemplify one of the three digital content revenue models (subscription, a la carte, and advertising-supported)

• Describe how each site works, and how it generates revenue.
• Describe how each site provides value to the consumer.
• Make one recommendation to improve or expand upon this revenue model to reach a different market of users and/or advertisers.
• Discuss the implications for this new target market on the overall business model.