Boston-based Nanigans, a firm specializing in the Facebook ads marketplace, recently released new data confirming a year-over-year jump in the Facebook ads marketplace this past holiday season. Facebook ads charged a higher cost-per-click (CPC), otherwise known as pay-per-click (PPC), which means that an advertiser pays each time a user clicks on the listing. This is especially interesting considering Facebook's latest incentive, which offers discounts for Facebook ads that keep users inside the network.

A Facebook IPO is in the works, and sources told AllThingsD that it will hit during the third week in May. For now, it is still a private company.

Research firm eMarketer Inc. shows ad revenues grew from $738 million in 2009 to an estimated $3.8 billion in 2011. Facebook Credits are becoming an increasingly important revenue source, bringing in an estimated total of $4.27 billion in 2011 alone. Analysis credit Facebook COO Sheryl Sandberg with the company's advertising strategy success.