Pinteresting....

So I decided to check out Pinterest and needless to say it was visual candy! I had never seen so many pictures of delicious cupcakes as well as hundreds of tasty entrees (probably things I shouldn't be eating while on weightwatchers). As I continued exploring I couldn't help but notice that a lot of the things being "pinned" on the site were done so by a predominantly female audience.  My girlfriend walked in on me exploring Pinterest and, well she laughed. I knew she had a pinterest but never really paid any attention to what it actually was, she said pinterest was good for "wedding planning, recipes and home decorations". When she said that, all of the images that were laid before me actually made a lot more sense. I was interested in the demographics of pinterest and found that 80% of the users were female. Why do you think there is such a discrepancy?