crime-smelling contributions?
In 2ch, posters' IPs are made public.
cf.
Silly People Who Did Crime Warning
http://qb5.2ch.net/test/read.cgi/sec2ch/1045495883/
1 ：２ちゃんねる ★ ：03/02/18 00:31
見つけたら規制議論板への報告、および警察等への通報をお願いします。
If you find them, please report to Argument BBS about the
Regulation of Contributions（規制報告板） and alert to police.
Crime-smelling Contributions
http://qb5.2ch.net/test/read.cgi/sec2ch/1123668043/
All of posters hinted the buying and selling of illegal drugs.