I have a few doubts about Hot 100.
1. As we know Streaming Song chart is based on On-Deman audio plays, video plays and programmed online plays. These components are not equal - programmed plays are less weighted (probably two-times according to buzzanglemusic servise which try to copy BB methodology). I wonder if Hot 100 use rare (unweighted) streams or weighted data. When Gary post SS numbers in Hot100 articles, he uses total unweighted (do you remember Streaming Songs data mess?).
2. What does really YouTube report to Nielsen? I know they use Content ID to count views but do they just report sum of views? I mean - YouTube algorithm choose next video according to our YT account activity and what's popular. It's the reason for example why Uptown Funk! still has huge streaming component or why "I'm Sexy And I Know It" hit 1B milestione on Vevo. Sometimes people just play some playlist and increase number of views of random videos. It's programmed streams or not?
YouTube should report this kind of views separately imo. Also Spotify numbers should be monitored in this kind too.
How does it work right now?
Sorry for my language skills. It's hard to describe my problem when you don't speak english good
