"Men tend to use Facebook for functional activities, such as sharing news, information and task-oriented content. Men are less likely to share photos on Facebook, but when they do they're more likely to be photos connected to their personal interests, such as hobbies, animals or scenery. In comparison to women, men are 8 percent more likely to post video clips to their Facebook profile."
http://www.physorg.com/news/2010-11-social-media-ties-demographics-engage.html