the gender ratio in SF is completely fucked.
when i lived in SF women would be completely rude to me when talking to them in a bar or social setting. calling me names to my face, bare sarcasm, thinly beiled insults, back-handed complements... you name it, i experienced it.
that kind of shit just doesn't happen in LA or NY. or vancouver, or texas, or ... anywhere, really. it's a REALLY fucked situation. sorry, single guys in sf.