Pinterest attracts people who need to organize the chaos of Internet-age information overload. It serves as an online scrapbook of images they find on the Web, a place to post fashion inspirations, decorating aspirations and more. It's a digital dream collage, a recipe box and a corkboard full of magazine clippings all at once.

The site's popularity has exploded in recent months, making it one of the fastest-growing websites in history. Its ascent to 10 million monthly visitors happened faster than Facebook or Twitter.

Unlike other startups, whose early users tend to be men under 35, it's estimated that 65 percent of Pinterest users are women, and these women drive 85 percent of the traffic on the site. In other words, not only are there more women on Pinterest but they are much more active than men. More than half the women on the site are 35 or older.