IBTP has categories to describe those who cleave strictly to these rules, and those who deviate in some acceptable way, and those who deviate in an unacceptable way (for instance, to be a “funfem” or a “sex-positive feminist” or a “nice guy” is to take an acceptable non-radfem position from which to argue, and be argued with; to be an “MRA” is to take an unacceptable non-radfem position to argue from).

This is a very picky nit, but as far as I can tell “nice guy” –at least as traditionally used sarcastically to refer to dudes who complain that women don’t like them even though they are so “nice”–is not an acceptable non-radfem position from which to argue at IBTP.

My evidence for this is that I have never seen any comments at IBTP in the last few years written from this position. I suppose it’s possible that none have been submitted in that time frame, but I consider it more likely that Twisty doesn’t allow them.