better source: http://bloggasm.com/new-study-shows-some-correlation-between-free-ebooks-and-higher-print-sales http://bloggasm.com/new-study-shows-some-correlat

better source: http://bloggasm.com/new-study-shows-some-correlation-between-free-ebooks-and-higher-print-sales http://bloggasm.com/new-study-shows-some-correlation-between... actual paper: http://quod.lib.umich.edu/cgi/t/text/text-idx?c=jep;view=text;rgn=main;idno=3336451.0013.101 http://quod.lib.umich.edu/cgi/t/text/text-idx?c=jep;view=tex... nice result, I've been praying that for music for ages.