I tried to delete everything. Didn't work? I dunno. I added myself as a regional admin. Don't know if that went through either. Messing around on there I did find some curious messages by Yoshiomi Kurisu. That is who hatena-chris is.
First message is dated 2012/12/01 09:30:00: WiiU will be released tomorrow!
Second messaged is dated 2012/12/10 09:30:00: Big titles will be released this weekend, so there are more messages on Miiverse.