Worthy & invaluable – a doc discuss about freemium model Cool doc. File is here: ebook-101 (Originally download from source: www.freemium.org/wp-content/ebook-101.pdf) And relevant cool blog: http://www.freemium.org/category/blog/ Relevant readings:
Free: How Today’s Smartest Businesses Profit by Giving Something for Nothing,
by Chris Anderson, 2010