On 2channel, the new show garnering the most interest is clearly Sora no Oto, followed by Baka to Test, Seikon no Qwesar, Durarara and Hanamaru Kindergarten, in that order.
On AnimeSuki, Baka to Test and Durarara are tied for the lead, with Vampire Bund and Sora no Oto in a second tier.
Those last two shows differ considerably, however, in that over half of the posts on Vampire Bund are negative, some virulently so. In the West, the show is a lightning rod for criticism; in Japan, there's just a middling amount of interest in it to begin with.
Katanagatari and Omamori Himari are the next tier. Katanagatari is already quite popular in the West, even though only one episode has aired.
Here are the tables:
2channel (1000s of posts)
|Sora no Oto||34|
|Baka to Test||18|
|Seikon no Qwesar||14|
|Ladies x Butlers||5|
|Baka to Test||774|
|Sora no Oto||660|
|Seikon no Qwesar||262|
|Ladies x Butlers||251|
|Nodame Finale ||108|
Ladies x Butlers is somewhat more appreciated in the West. Hanamaru Kindergarten is much more appreciated in Japan. Seikon no Qwesar ranks higher in Japan, too. The strange but actually pretty good show Chuu-bra is not much appreciated in either place, lol.
Some shows are missing from the 2channel list because I couldn't easily find a thread, or because they include posts for previous seasons of a show, and so were not comparable with new shows' threads. Shows are missing from the AnimeSuki list because I couldn't find a thread.
I'd make comparisons with Japanese TV ratings, but most shows do not appear on stations for which data are available.