The list itself is relatively interesting and relatively predictable if you've payed any attention to the site this decade. I agree with some of the top picks (Outkast, LCD Soundsystem Missy Elliot), but they like Beyonce and Daft Punk a lot more than I do. It's worth your time to look through the list, at least so that you can pass the time before my easier-to-swallow top 180 songs of the decade list comes out.
The countdown from 500 starts here, and the top 10 (spoiler alert) is listed below.
10. The Arcade Fire--Neighborhood #1 (Tunnels) (not my favorite by them)
9. Animal Collective--My Girls (see above explanation)
8. Radiohead--Idioteque (it's not that good)
7. Missy Elliot--Get Ur Freak On (can't argue here)
6. Yeah Yeah Yeahs--Maps (can't argue here either)
5. Daft Punk--One More Time (really?)
4. Beyonce--Crazy In Love (good, but #4? No.)
3. M.I.A.--Paper Planes (feat. Bun B and Rich Boy) (a little bit high I think)
2. LCD Soundsystem--All My Friends (deserves it)
1. Outkast--B.O.B. (maybe not the best, but certainly top 5)
There you go. Decade list mania has officially started.