Reasons why SNSD members have Antis?

I need your opinion on this. This is the official rank of the most anti-faned:

1.Tiffany
2.Jessica
3.Yoona
4.Taeyeon
5.Sunny
6.Hyoyeon
7.Seohyun
8.Yuri
9.Sooyoung

Just answer about what you think of them that is not appealing.