"This year we will sell half a billion diapers," Marc Lore, the CEO of Diapers.com tells me. That is a hell of a lot of diapers. In fact Lore believes Diapers.com sells four times as many diapers as the next largest seller of nappies online, Amazon. In 2009, Diapers.com pulled in $182 million in revenues, up from $89 million in 2008, he says. And this year, Diapers.com is on a run rate to bring in $275 million in revenues. The company may one day become the Zappos of diapers and baby gear. (Zappos, by comparison, pulled in $1.2 billion last year and is now part of Amazon). The Montclair, New Jersey-based company is announcing today its latest financing round of $20 million in debt from Pinnacle Ventures. (Actually, the company name is Quidsi. Diapers.com is just the brand name). Last October it raised $30 million in equity from NEA, Accel, and Bessemer in a series E financing. The total capital raised since 2006 is now $78.5 million.