Wall Street Journal cites some very interesting ideas:

Since October, Pinterest has created a team of four people whose job it is to interact daily with companies, learning about what is working—and what is not—online. In November, Pinterest rolled out "business" accounts that allow companies to use their corporate name on their pinboard and to verify that they link to an official corporate website. Pinterest has also told businesses it will introduce new data-analytics tools, so companies can keep better track of their Pinterest traffic and how users are interacting with the content.

In studying which advertising system to introduce, Mr. Silbermann declined to go into detail, but one feature the company plans to unveil this year is called "suggestions," which is a way for people who use Pinterest regularly to serendipitously discover other content, said Pinterest executives. For example, someone who adds pictures of a swimsuit to their Pinterest pinboard might also see a "suggestion" for a Hawaiian resort.

Pinterest "is a marketing platform," said Lawrence Lenihan, founder and managing director with FirstMark Capital, which invested early in Pinterest. "There's a lot more to go and lot more to figure out."

Pinterest now has 48 million worldwide monthly active users. Up from 9mm a year ago.

They have 100 employees in their 58,000 square foot office.

Their valuation is estimated to be $2.5 billion.

"Pinterest needs to be way easier to use," said co-founder Evan Sharp, 30, who created the site's grid-like design. "In 2013, we want to be a service that's highly personalized."