Taking a page out of Billboard's playbook, Spotify is using its listener data to determine the most popular music in a particular country. Available on the website or as embeddable widgets, the weekly updated charts will reveal which tracks are most listened to for the Spotify 50. The Social 50 list will contain the tracks most often actively shared by the service's users, including via Facebook and Twitter. Another new addition is the ability to see play counts for an artist's top tracks, tracking global plays since October 2008. That's rolling out to desktop clients first and will pop up elsewhere later, while the charts will update every week at noon ET. Hit the link below for this week's list topped by Macklemore & Ryan Lewis and Daft Punk, although we'll know if it's really taking off when we see a green record on someone's wall in a future episode of Cribs.