These new figures, drawn from AdAge(pdf) and Media2.0 are highlighted and dissected by Rubel:

• 70% of Media & Communications companies said they were going to
  include blogs and social networks into their marketing efforts
  
• 35% will spend marketing budgets to develop in-house blogs
  
• 78% of RSS feed users are male

You may need to consider that when placing ads in feeds, when rewriting your ‘What is RSS?’ page to attract females and when writing your blog as well.

I am a female, so this somewhat shocks me.  I expected a divide, but 78%?  That seems steep, even in this case.