Jim-san,

There is a serious troll, called Ronpa, who makes and keeps more about 80 threads in akb board.
Someone has been asked to delete those like this,
http://qb5.2ch.net/test/read.cgi/saku/1369948423/543-545
but no★ is working for delete.
The troll is not only occupying 80/750threads of abk boards, suffering its server by writing 500 res /day by himself, and cause 10 times of his res from others intend to keep other threads.
Almost all of users in the board ask you to prohibit his provider, not only delete those threads.

This is a report as an examle;
http://qb5.2ch.net/sec2chd/kako/1367/13673/1367354311.html

These are his yesterday's ID.
http://hissi.org/read.php/akb/20140302/SE9GZVorcDFQ.html?thread=all
http://hissi.org/read.php/akb/20140302/ZDZQNU9VZ21Q.html?thread=all
http://hissi.org/read.php/akb/20140302/dXAvWjEvUUlQ.html?thread=all

Best regards,