I repeat my question from September. Is this based on sales, airplay, a combination of the two or just made up?

I have no idea?

I found this on the web:

This is your weekly roundup of the 20 hottest tracks out there right now, whether new or forthcoming, if it's essential it's in this chart.

This chart is identical to the VIVA chart:

http://uk.viva.tv/music/this-weeks-viva-top-20

 

 

Monday, 12.12.2011.

 

http://www.mtv.co.uk/music/charts/this-weeks-top-20

 

1. Lady GaGa - Marry The Night

2. Lloyd feat. Andre 3000 & Lil Wayne - Dedication To My Ex

3. Olly Murs - Dance With Me Tonight

4. JLS - Do You Feel What I Feel

5. Katy Perry - The One That Got Away

6. X Factor 2011 Finalists feat. JLS and One Direction - Wishing On A Star

7. The Wanted - Warzone

8. Rihanna feat Calvin Harris - We Found Love

9. Adele - Turning Tables

10. Kelly Rowland - Down For Whatever

11. Jessie J - Who You Are

12. Flo-Rida - Good Feeling

13. Amy Winehouse - Our Day Will Come

14. T-Pain ft. Wiz Khalifa & Lily Allen - 5 Oclock

15. Rebecca Ferguson - Nothing's Real But Love

16. Coldplay - Paradise

17. Wretch 32 - Forgiveness

18. Beyoncé - Love On Top

19. Ed Sheeran - Lego House

20. Rizzle Kicks - Mama Do The Hump