Over last few years visiting MySQL Conference and Expo I noticed the number of ladies in audience increasing dramatically.  Few years ago there were just few, besides Sheeri and this year there was a fair amount, though still of course it remained predominantly male event. My hypothesis around it was ladies do not get involved with bleeding edge technology as frequently and as MySQL matured and started to be more used by Serious (boring?) corporation rather than geeks portion of Ladies increased. I kind of got a confirmation of this idea attending MongoDB conference in the San Francisco. MongoDB is bleeding edge technology, probably at similar stage MySQL was in late 90s, and no surprise there were very few ladies in the audience, besides few beautiful ones employed by 10gen.