Number of threads in 2chan for spring anime, indicating the popularity. Each thread contain 1000 posts.
Ano hi Mita Hana no Namae... 91
Hanasaku Iroha 80
Tiger & Bunny 63
Nichijou 50
Steins;Gate 49
Dog Days
Hidan no Aria 29
18
Denpa Onna to Seishun Otoko 17
A Channel 17
Moshidora 17
Astarotte no Omocha 10
Yondemasu yo Azazel-san 9
Ao no Exorcist 9
C 9
Oretachi ni Tsubasa wa Nai 8
Sengoku Otome Momoiro Paradox 8
Dororon Enma-kun 7
Sofuteni 7
Hoshizora e Kakaru Hashi 7
Sket Dance 6
Hyouge Mono 5
Deadman Wonderland 5
Danbooru Senki 5
Hen Zemi 4
Pretty Rhythm Aurora Dream 4
30-sai no Hoken Taiku 4
Fireball Charming 3
Sekai-ichi Hatsukoi 3
Suzy's Zoo 1
Fujilog