It turns out that many more girls than boys have web sites, and many more are blogging. This according to research conducted by the Pew Internet and American Life Project, and also by Harvard's Berkman Center for Internet & Society.
An excellent article on this topic was written by Stephanie Rosenbloom for the New York Times, "Sorry, Boys,This Is Our Domain", (Feb 21, 2008).
No one is much expecting this trend to convert to a change in the dominant gender in the computing industry, it seems to be more about the acculturation of young women to tell stories about themselves, confess, dress to communicate identity, and otherwise put their inner selves on display in public in some fashion.
Very thought provoking.