8 Links to Learn about Freemium Business Models
http://mavenary.com/manish-shah-is-learning-freemium-business-models
Many successful businesses attracted customers by offering something for free before asking them to pay for the full service. Pandora, Dropbox, and Evernote are good examples of this. There is an art and a science to finding the right mix of free vs paid services, this skill hopes to surface some of the techniques.