Ok, here is my try at getting a post deleted by moderator...
curl -A "Mozilla/4.04 [en] (X11; U; AIX 4.2; Nav)" -c cookies.txt -F "task=post" -F "thread=1156206446" -F "password=vipper" -F "field_a=VIPPER" -F "field_b=sage" -F "name=" -F "link=" -F "markup=none" -F "comment=Lol I am a spammer." "http://4-ch.net/dqn/kareha.pl"