特定の沈んでるスレへの上げ荒らし目的もあると思いますよ
あと、保守保全目的も

http://ex11.2ch.net/test/read.cgi/morningcoffee/1132847166/380 2005/12/14 09:35:15 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1132500497/425 2005/12/14 09:40:09 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1132582139/392 2005/12/14 09:40:30 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1132677136/371 2005/12/14 09:40:51 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1133960468/121 2005/12/14 09:45:09 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1134141640/77 2005/12/14 09:45:33 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1133615072/415 2005/12/14 09:50:12 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1133719398/167 2005/12/14 09:50:33 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1133961789/120 2005/12/14 09:51:39 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1133879578/143 2005/12/14 09:55:11 0
http://ex11.2ch.net/test/read.cgi/morningcoffee/1132369518/477 2005/12/14 10:00:09 0

これ以外のスレにも公開トリップを使い固定ハンドルを騙って上げ＆保全してるっぽいし