Taken from ATRL: Among the changes we implemented or seriously considered this year for our charts are (i) how to weigh paid vs. ad-supported and free streams, (ii) the weighting of programmed streams (on a service like Pandora), (iii) whether streams of YouTube official music videos should be included in the Billboard 200 albums chart, (iv) how to address the increase in, and uniqueness of, sales of music through direct-to-consumer offers, (v) whether to modify what’s allowable for concert