Wolfeh pretty much said it. Yes trash talk is part of the game, but sexism is not allowed on N|U servers. Alert an admin, hop in vent or shoot a pm on steam (shtlss07 is my steam and xfire btw). Take a demo/log their steamid as a last resort, but do what you need to do to help us help you. A little ragging is acceptable, but once the line is crossed or someone won't stop then the situation needs to be taken to the next level.

BTW there is nothing wrong with male sigs/sprays and you won't get banned for them. As for the nature of gay porn, you pretty much summed it up in your post: the gaming community is primarily male populace.