Thanks to Taylor not having streaming points the past two weeks, we can calculate the weights of sales vs radio in the Hot 100 formula.
Quote:
"Never" spends a second week at No. 1 on the Hot Digital Songs chart with 307,000 downloads sold, according to Nielsen SoundScan, a 51% slide from its debut on the list last week with sales of 623,000.
Radio airplay, meanwhile, continues to swell for "Never," which wins the Hot 100's top Airplay Gainer ribbon, lifting 14-13 in its third week on the Hot 100 Airplay chart (67 million all-format audience impressions, up 30%, according to Nielsen BDS).
Although sales for "Never" more than halve, the song still claims the Hot 100's top spot over Flo Rida's former one-week No. 1 "Whistle." ("Never" decreases by 41% on overall Hot 100 points, while "Whistle" slides by only 2%).
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Last week, Taylor had 623K sales and 52M airplay, this week is 307K sales and 67M airplay. Since we know that her points fell by 41% (aka this week's points are equal to last week's points times .59), the equation is:
(623+52*X)*.59=307+67*X
367.57+30.68*X=307+67*X
60.57=36.32*X
X=5/3
Because 1,000 sales are equal to 1 point in this equation, X=5/3 means that 1 million in radio audience is equal to 5/3*1000=1,667 purchases. Equally,
multiply the radio audience (in millions) by 5/3, and add them to the track sales (in thousands).
So WANEGBT's points this week are: 307+67*5/3=
418.7
I'm still trying to figure out the exact weight of streaming. I think it might be around 1/15 (so 15 streams would equal one sale), but there are some weeks that just aren't working yet, so don't take that number as the strict truth.
This is close to the formula from
http://atrl.net/forums/showthread.php?p=11250215, but airplay is weighted slightly higher.
That Maroon 5 song is a grower, altough Payphone >>> .. I think most people hate Payphone because it was overplayed but it's a good song imo 
I think OMN is bland compared to Payphone but I'm sure It's gonna grow on me. 
(altough WANEGBT may block both 
)
