typically defined as books sold in electronic format - typically in a closed binary form
- alternative: free work like Project Gutenberg and Brewster Kahle's various projects. Often referred to as E Text-s
- 50 sources
online "markets" - esp good for Self Publishing
- related: Print On Demand, Lulu, Amazon
- DRM-free http://drmfree.calibre-ebook.com/
a special case has been those designed for dedicated hardware (e.g. Kindle)
HyperCard was an early tool for authoring these
http://drinkmalk.com/ - for commercial titles you already own
Will Text-Book-s go this direction?
Does Wikipedia count?
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