In other words, have you created websites where you publish public domain works? Has Google slapped you for them for duplicate content? I know it would be much tougher now with Google's new algorithm. So, how can I make public domain works work to my advantage? The only thing I can think of is free downloads and email marketing - that's without getting penalized by Google for duplicate content. If you publish public domain works now on your sites, wouldn't Google consider it duplicate content if you don't significantly change the content?