Slusho.jp has added a mobile phone section to the site, which can be reached on your cell phone at slusho.wap.com. The WAP site features wallpaper and ringtones that you can download to your phone, the Slusho history, and information on the Slusho! contest.
Actually you can visit this in your regular browser as well (IE works better than FireFox), but you won't be able to hear the ringtones.
* Thanks to Teap and Semidi for emailing me this!