Tuy vao tieu de tag the loai video ma QC se dc dat vao video ban, nguoi xem tat quang cao qua nhanh se lam giam muc do phu hop va se kho de GA dat QC do lan nua~ vao video ban.=> click chuot ko co => ko co tien
QC cung bi anh huong den do dai video neu QC cua ban vua hien len ma tat thi muc do...