David Kroll at Terra Sigillata notes that CENtral Science has 9 women contributors and only 4 men, the opposite of the usual sausage-fest in science blogging at most sites and somewhere in the magical realm of social sciences in its overwhelming XX dominance.

It isn't that chemistry is more female friendly than something like biology, which has majority representation of female PhDs almost directly matching American society, it may be an example (at least in chemistry) that they do other things than research after they get a degree:
I find this leads to a very interesting second question: does the overrepresentation of women at CENtral Science reflect that women are more likely to choose “alternative” careers with their scientific training?