Just quoting myself because I found the two pairs of results.
NeoGAF AotY 2011:
Code:
1 Mahou Shoujo Madoka Magica 495
2 Usagi Drop 475
3 Mawaru Penguindrum 452
4 Steins;Gate 394
5 Fate/Zero S1 260
6 Hourou Musuko 253
7 Redline 216
8 Hanasaku Iroha 195
9 Working'!! 154
10 Ano Hi Mita Hana no Namae o Boku-tachi wa Mada Shiranai. 141
AnimeGAF AotY 2011:
Code:
1 Mawaru Penguindrum 243
2 Mahou Shoujo Madoka Magica 242
3 Usagi Drop 222
4 Steins;Gate 185
5 Hourou Musuko 163
6 Fate/Zero S1 146
7 Hanasaku Iroha 123
8 The Idolm@ster 92
9 Working'!! 87
10 Redline 85
And special mention of #11 Chihayafuru at 81 votes due to some Idolm@ster ten-point votes of dubious sincerity.
Amazingly 9/10 are still in the top ten even though only ~50% of the voters were AnimeGAF participants. In general, the only thing that changed were the individual series rankings within the top ten.