Lily Allen is on that list at #7.
I could see how some would find Lily annoying, but I'm a pathetic anglophile and a sucker for the British accent... especially young ladies with British accents... and young ladies with British accents singing pop songs.
When Lily busts out her sing-speak style it really brings the West-London dialect across - in a good way.
So I take offense to Ms. Allen being lumped into this list along with the other worthy and truly annoying members like Corgan, Stapp, Mayer, and Oberst.