epublishing.com comments: Comments for 'The What and Why of Revenue Per Reader (RPR)'https://www.epublishing.com/news/2014/mar/17/426-the-what-and-why-of-revenue-per-reader-rpr/epublishing.com comments: Comments for 'The What and Why of Revenue Per Reader (RPR)'en-usWed, 12 Mar 2025 15:08:40 +0000