Mark Pincus' company is the maker of FarmVille and other games played on Facebook. He's worth $1.3 billion, and he may see that number grow if he meets his goal: to expand the universe of digital game players from sci-fi geeks to soccer moms and their kids.

Facebook's IPO could value the company at up to $100 billion. That would make it a very expensive stock for a company whose earnings are strong but not stratospheric. Investors who take the plunge will be making a wager that Facebook can capture a very large share of the advertising market.

In its widely expected filing, the social media giant says it expects to raise $5 billion. Shares are likely to start trading sometime in the second quarter.

How does a free website like Facebook get valued at close to $100 billion? Melissa Block talks with Wired magazine senior writer Steven Levy about how Facebook uses your personal information to generate targeted advertisements and huge revenues.

Facebook is about to find out how many friends it has. The social networking giant wants to sell shares to the public. It filed papers for an initial public offering Wednesday. With about 800 million users, Facebook is one of the most visible companies in the world. But until now, the financial side of Facebook has remained largely a mystery. For more, Melissa Block talks to NPR's Steve Henn.

That's not a slam at digital music, the rock 'n' roll legend says. It's a recognition that current formats don't match vinyl's sound. He and Jobs were talking about a new player to give music lovers back the sound they used to get.

Internet companies and activists showed their growing clout by all but killing two copyright bills that big media websites had pushed. Now, the same players who stopped SOPA and PIPA are trying to work together to further protect their interests. They're finding that may be easier said than done.