There is one point around Greg's story about diversities between genders.
Men enjoy in playing war (with real guns, paintball, football, edit
war, argument war...). Women enjoy in playing less aggressive games.
The only games available on Wikipedia are games for men. Facebook is
different. At the basic level, there are games for everyone: men can
enjoy argument wars, women can enjoy in searching what is going on
with their people around them.
That means that we need games for women. While I think that we should
build full social network, just a basic one would help.