In a nutshell, Billboard has modified its Country Songs chart to include digital downloads and streaming. And airplay will be counted not only from country stations, but songs that have crossed over to pop will have airplay from pop stations factored in as well. Reaction on Billboard's web site from commenters has been mostly negative, with a number of the positive comments coming from Taylor Swift fans. And why wouldn't they be happy... under the new chart methodology, "We Are Never Ever Getting Back Together" is now #1 on the Country Songs chart, despite having virtually fallen out of the Top 40 on the airplay side. The original airplay-only chart continues but will now be dubbed Country Airplay.
http://www.billboard.com/news#/column/chartbeat/ask-billboard-chart-ch-ch-changes-1007979382.story
http://www.billboard.com/news#/column/chartbeat/ask-billboard-chart-ch-ch-changes-1007979382.story