Anonymous BBS

I want to set up a message board in my own language.
What do you recomand:
1.Shiichan
2.Kareha
3.Others( if so what?)

>>25
Because of threads like this one:
http://bubble6.2ch.net/test/read.cgi/dejima/1210196150/

Now imagine that spammed all over the place by some guy with #tea in the name field.