The statistics are interesting, but I think members should have the ability to opt out of having statistics published about them, especially regarding Time Reading and # of Visits, which is private information. The report would list them as something like @anon instead of their posting name.
Regarding the reading time, I think I sometimes open a browser window in the background and then do other stuff. Or I open a browser window and walk away from my computer for a while. All that probably counts as “reading” time. Otherwise, how would the website know what my eyes are focused on at any moment?