●によるものと思われる(ID無しの板なので)
もの凄い勢いで誰かが質問に答えるスレ　の乱立
http://school4.2ch.net/test/read.cgi/qa/1100531159/ 04/11/16 00:05:59
http://school4.2ch.net/test/read.cgi/qa/1100531489/ 04/11/16 00:11:29
http://school4.2ch.net/test/read.cgi/qa/1100531814/ 04/11/16 00:16:54
http://school4.2ch.net/test/read.cgi/qa/1100531870/ 04/11/16 00:17:50
http://school4.2ch.net/test/read.cgi/qa/1100531983/ 04/11/16 00:19:43
http://school4.2ch.net/test/read.cgi/qa/1100532102/ 04/11/16 00:21:42
http://school4.2ch.net/test/read.cgi/qa/1100532334/ 04/11/16 00:25:34

最近頻繁に乱立されています。