How exactly do you measure a contribution to free & open source software? Is it strictly someone who writes code or has write access to a projects source control system? What about people who report bugs, do they count? What about the folks writing documentation for the free & open source projects, are they contributors? What about the people who simply talk about & promote the FLOSS projects, the community managers such as Jono Bacon or Joe "Zonker" Brockmeier, shall we count them?
Deborah Nicholson has been involved with the Free Software Foundation was several years now and I don't think anyone who knows how passionate she is about her work would ever refer to her simply as a professional hobnobber.
Stormy Peters began her career writing code and worked her way up the ranks in a commercial company that dealt with free & open source software. Only recently did she make the jump over to being the CEO of the GNOME Foundation.
Both of these woman are examples of women who are active contributions to the free & open source community. Neither one, like many others, doing it simply for a paycheck.