The stories may be 'fine' (I only saw the 2 linked here) but it is the comments afterwards which appalled me, men posting about punching a woman in the kidneys if she doesn't get the position for sex right. This was not an isolated comment, there were several misogynistic and violent comments from woman-hating scumbags on there.
So while comparing women & beer is not a new thing (oh yes, isn't beer great that it doesn't change its mind after you take its top off - if only women were inanimate objects that you could do what you like to.) its the awful attitude of some of the posters taking it beyond merely harmless 'amusing' jokes to abusive misogynistic hatred.
I agree that any woman posting on there to be 'one of the lads' must have serious self-esteem issues. Its like a black person posting on the EDL/BNP forums in support of racist comments!