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Re:Buttercoin – US-based Bitcoin exchange by maaku on Friday February 28, 2014 @05:33PM (#7321998)
Open source, yes. Free software, no.

Sadly this was open source, not free.

Re:Buttercoin – US-based Bitcoin exchange by wcoenen on Friday February 28, 2014 @07:11PM (#7322411)
Free software typically doesn't force you to share changes either, as long as you don't distribute the binaries. Patching GPL code and using it in a web application without ever releasing the source is perfectly fine.

The Affero GPL was designed to force the release of source even in that case. That's the only license I know which has that property though.

Re:Buttercoin – US-based Bitcoin exchange by maaku on Saturday March 01, 2014 @02:07AM (#7323471)
Free software != GPL. One could argue that the Affero GPL represents a continuation of the ideals which gave birth to the GPL, now that more and more applications have moved to being network services (something less common in 80's).