No doubt, but that doesn't necessarily mean there are more women using bitcointalk than most presume. 

I tend to think that some people intentionally fill out the wrong gender in their personal info field in order to obfuscate their identities, and even if all the data were cobbled together for members that did choose a gender, it wouldn't be entirely accurate.  From what I've seen of the massive number of signature spamming shitposters that make up the vast majority of members here, they don't disclose very many personal details, either in their posts or in their forum profile.  Thus it's really hard to know how many females we have here.

It'd be interesting to know, however.  I think most members are male, just as I think most bitcoiners are male--but I really have no idea what the numbers are.  From my personal experience I've known a small handful of people who've owned bitcoin, and they're all guys.  I know some women who know about bitcoin but who've never actually owned any.  That's only my personal, very small data set, but I bet less than 10% of members here are women.