Because I have the data, and because I can, some alternatives to the overall list:
Top Ten SF Novels 2001-2010 by British Writers
1. The Carhullan Army by Sarah Hall
2. Natural History by Justina Robson
3. Spirit by Gwyneth Jones
4. Life by Gwyneth Jones
5. Bold as Love by Gwyneth Jones
6. City of Pearl by Karen Traviss
7. The Year of Our War by Steph Swainston
8. Living Next-Door to the God of Love by Justina Robson
9. In Great Waters by Kit Whitfield
10. Hav by Jan MorrisTop Ten SF Novels 2001-2010 by American Writers
1. Maul by Tricia Sullivan
2. The Time-Traveler’s Wife by Audrey Niffenegger
3. Speed of Dark by Elizabeth Moon
4. Lavinia by Ursula K Le Guin
5. The Hunger Games by Suzanne Collins
6. Passage by Connie Willis
7. Spin State by Chris Moriarty
8. Nekropolis by Maureen McHugh
9= Carnival by Elizabeth Bear
9= Hammered by Elizabeth BearTop Ten SF Novels 2001-2010 by Writers from the Rest of the World
1. Maul by Tricia Sullivan
2. Farthing by Jo Walton
3. Moxyland by Lauren Beukes
4. Oryx and Crake by Margaret Atwood
5. UFO in Her Eyes by Xiaolo Guo
6= The Etched City by KJ Bishop
6= Lifelode by Jo Walton
8. Zoo City by Lauren Beukes
9. The Salt Roads by Nalo Hopkinson
10. The Alchemy of Stone by Ekaterina Sedia
Sincere apologies if I’ve mis-nationalised anyone in any of these lists — do let me know. [last update 12/12/10]
Ranking calculated from 101 responses to a poll run during October, November and December 2010.