The LessWrong wiki contains a biased and offensive entry

A rational way to proceed would be to forget the subjective "offensive" part (for example, most of Wikipedia is offensive to one group or another), and concentrate on the more objective "biased" claim.

May I suggest that for each statement that you find biased you list the bias you claim it suffers from and your arguments why it suffers from it.

Here is an intentionally ridiculous example, just to show what I mean:

Postulating group selection is guaranteed to make professional evolutionary biologists roll up their eyes and sigh.

Bias: Generalizing From One Example

Why: EY rolls his eyes when confronted with the claims he finds ridiculous, and assumes that everyone does, including professional evolutionary biologists. However, the evidence [cite] unequivocally shows that the eye-rolling behavior is mostly confined to teenage girls talking to their parents.

It is not reasonable for two rational people to get pissy and engage into an edit fight instead of discussing the evidence, so show that you have learned something from LW.