Busted. Top of the charts for ages (till they split up - there is a god) but they knew about 3 chords and had deep and meaningful lyrics like "air hostess, i like the way you dress" so without any musical value whatsoever basically. you could train a monkey to write a better song.
No. I liked Busted, despite me being quite a grunge freak. They made POP Music, which was good POP songs. Does it matter how many chords are used? In most Hip Hop, there is no chords, just a note.

I don't pay attention to the charts anymore.