Jim-san.
Population decline of the board of news category is large.
It is a board repulsion of prohibition of sugar beet was greater.

news board
http://hayabusa3.2ch.net/news/
The total number of ID (population)
http://merge.geo.jp/history/sboard/news/?mode=i
03/02〜03/08 Average 74556
03/23〜03/29 Average 57498
-> 22% reduction

newsplus board
http://ai.2ch.net/newsplus/
The total number of ID (population)
http://merge.geo.jp/history/sboard/newsplus/?mode=i
03/09〜03/15 Average 160598
03/23〜03/29 Average 123533
-> 23% reduction

news4plus board
http://awabi.2ch.net/news4plus/
The total number of ID (population)
http://merge.geo.jp/history/sboard/news4plus/?mode=i
03/02〜03/08 Average 29934
03/23〜03/29 Average 21596
-> 25% reduction

News Categories are having a special problem.
2ch is provided Unauthorized reproduction prohibited rules.
However, all of the news board is made up of Unauthorized reproduction of news agency.
This is a double standard.
People who do not accept this idea is often.

The purpose of news board is to spread the news.
It can not be diffusion. Population decline will be further progressed.