How much do you watch the X Factor?

A general quiz all about the X Factor?

1 Who won the X factor, 2008?
2 Which song did the all of the contestants sing together on live show 3 (2009)?
3 How many contestants go through to the live final?
4 What's the name of the 2 twins that is in Louis group (2009)?
5 Who has always been on the Judge's panel?
6 Who won Contestiators live show 2 (2009)?
7 Who presents the X Factor?