Oh, I've been checking it a lot, so it seems so far I have:
Hott River: http://www.pixiv.net/tags.php?tag=%E3%83%8F%E3%83%83%E3%83%88%E3%83%AA%E3%83%90%E3%83%BC%E3%81%95%E3%82%93

Molossia: http://www.pixiv.net/tags.php?tag=%E3%83%A2%E3%83%AD%E3%83%83%E3%82%B7%E3%82%A2

Kugelmugel: http://www.pixiv.net/tags.php?tag=%E3%82%AF%E3%83%BC%E3%82%B2%E3%83%AB%E3%81%A1%E3%82%83%E3%82%93

I just got that by clicking tags on pictures randomly XD
There's not too much up yet, but I'm sure with more time they'll start to fill up