Taking something seriously just because it pays you attention may not be a good idea.
A shorter version is: "don't feed the trolls".
More politely, even if otherwise reasonable people happen to do something trollish, don't give attention to this act, because you might reinforce it.
I am not sure whether this has been posted here before but I came across this: http://rationalwiki.org/wiki/LessWrong
What do you think about RationalWiki in general, and their opinion regarding LW?