I know Shaun normally does these kind of countdowns, but I thought I'd try my hand at one since I've I've predominantly lived my teenage years and adulthood from 2000 so have a fairly stable and varied grasp on the music from the last 13 years. I'm using a few sources, although not relying on them wholly as some rate some of the worst/most average songs among the best and I'll be using my own judgement, which some may be sceptical with but trust me, I'll be pretty reliable (I love Alanis but even I know she hasn't given one of the 100 best songs in the last 13 years). You may disagree with some of the choices, but tough.