Summary Box: Interest spikes in Pinterest

HOT NEW SITE: 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.

FAST ASCENT: The site’s popularity has exploded in recent months, making it one of the fastest-growing websites in history. It hit 10 million monthly visitors faster than Facebook, Twitter or any other site tracked by comScore.

DRIVEN BY WOMEN: Internet tracking firm comScore estimates that 68 percent of Pinterest users are women, and they drive 85 percent of the traffic on the site.