That is a very interesting concept! Can you share how publishers use the text selection feedback to optimize their websites or editorial content? Does Markerly gather all text selection or just text "shared" through Markerly's social tooltip? The former could have privacy or security implications.
Markerly's javascript allows us to collect all text selection as well as text selected and shared. It's all aggregate data, not personally identifiable. You can read about how publishers are able to optimize their content using the copy and paste analytics on this post http://blog.markerly.com/
