To be melitz yosher: Granted that some aliases are clearly identifiable and often in some threads the subject matter and nuances of writing clearly identify the gender, there is still a valid tachlis here. 1) a mussar from an unexpected source or angle can be a powerful mussar. If a posters opinion gets its socks knocked of by an eshes chayil with some bina yesera, it might open some avenues of thought that he wouldn’t have seen. We learn the finer details of tefilah from a woman, of a different dor, and perhaps a woman of the level of nevua, but a woman nonetheless. Conversely, the Shunamis was not averse to taking her case directly to Elisha, and she seems to have handled the very interesting character of Gechazi without problem.
2) Many topics distill into dicussions of Halacha, or Hashkofa. For the inadequately educated, or misguided, it can be a learning experience. For a poster who is zoche to post emes la’amiso, it can qualify as talmud torah berabim. If someone picks up an idea that is new, threatening, or questionable, this does not have to be a dead end. It can be discussed with spouse/chavrusa/ advisor/ rov.
3) there are posters that are M.O.ish, undefinables like myself, and all manner of folks from Lakewood to Karnei Shomron. In anonymous curious way, the forum promotes achdus. Hodesh Tov